diff --git a/building/linux32/squeak.stack.spur/build/mvm b/building/linux32/squeak.stack.spur/build/mvm
index 24a10704bb..5b398c842a 100755
--- a/building/linux32/squeak.stack.spur/build/mvm
+++ b/building/linux32/squeak.stack.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstkspurlinuxht
 
@@ -8,8 +9,8 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
-case $a in
+read -r a
+case "$a" in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
 esac
@@ -21,7 +22,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	VM_WORD_SIZE="32" \
 	VM_CFLAGS="-DNDEBUG -DDEBUGVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.cog.spur/build.assert/mvm b/building/linux32ARMv6/squeak.cog.spur/build.assert/mvm
index 8ff86328b8..0c6dbadf5d 100755
--- a/building/linux32ARMv6/squeak.cog.spur/build.assert/mvm
+++ b/building/linux32ARMv6/squeak.cog.spur/build.assert/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqcogspur32linuxhtRPi
 OPT="-g3 -O1 -DDEBUGVM=0"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS -DUSE_MIDI_ALSA -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.cog.spur/build.debug/mvm b/building/linux32ARMv6/squeak.cog.spur/build.debug/mvm
index de69c34d2f..85cdc68502 100755
--- a/building/linux32ARMv6/squeak.cog.spur/build.debug/mvm
+++ b/building/linux32ARMv6/squeak.cog.spur/build.debug/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqcogspur32linuxhtRPi
 OPT="-g3 -O0 -DDEBUGVM=1"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS -DUSE_MIDI_ALSA -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.cog.spur/build/mvm b/building/linux32ARMv6/squeak.cog.spur/build/mvm
index d52d1a4d27..b2c57f5eae 100755
--- a/building/linux32ARMv6/squeak.cog.spur/build/mvm
+++ b/building/linux32ARMv6/squeak.cog.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqcogspur32linuxhtRPi
 OPT="-g -O2 -DNDEBUG -DDEBUGVM=0"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS -DUSE_MIDI_ALSA -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.cog.v3/build.assert/mvm b/building/linux32ARMv6/squeak.cog.v3/build.assert/mvm
index a502d69306..d9a0cf8575 100755
--- a/building/linux32ARMv6/squeak.cog.v3/build.assert/mvm
+++ b/building/linux32ARMv6/squeak.cog.v3/build.assert/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqcogv3linuxhtRPi
 OPT="-g3 -O1 -DDEBUGVM=0"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS -DUSE_MIDI_ALSA -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.cog.v3/build.debug/mvm b/building/linux32ARMv6/squeak.cog.v3/build.debug/mvm
index 3588316a3c..755b8065c6 100755
--- a/building/linux32ARMv6/squeak.cog.v3/build.debug/mvm
+++ b/building/linux32ARMv6/squeak.cog.v3/build.debug/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug V3 VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqcogv3linuxhtRPi
 OPT="-g3 -O0 -DDEBUGVM=1"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS -DUSE_MIDI_ALSA -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.cog.v3/build/mvm b/building/linux32ARMv6/squeak.cog.v3/build/mvm
index 525c06d56e..5efc85988d 100755
--- a/building/linux32ARMv6/squeak.cog.v3/build/mvm
+++ b/building/linux32ARMv6/squeak.cog.v3/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # V3 VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqcogv3linuxhtRPi
 OPT="-g -O2 -DNDEBUG -DDEBUGVM=0"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS -DUSE_MIDI_ALSA -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.stack.spur/build.assert/mvm b/building/linux32ARMv6/squeak.stack.spur/build.assert/mvm
index de7d621c57..83fc244392 100755
--- a/building/linux32ARMv6/squeak.stack.spur/build.assert/mvm
+++ b/building/linux32ARMv6/squeak.stack.spur/build.assert/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqstkspur32linuxhtRPi
 OPT="-g3 -O1 -DDEBUGVM=0"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.stack.spur/build.debug/mvm b/building/linux32ARMv6/squeak.stack.spur/build.debug/mvm
index f0b77df138..6a53537bfe 100755
--- a/building/linux32ARMv6/squeak.stack.spur/build.debug/mvm
+++ b/building/linux32ARMv6/squeak.stack.spur/build.debug/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqstkspur32linuxhtRPi
 OPT="-g3 -O0 -DDEBUGVM=1"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.stack.spur/build/mvm b/building/linux32ARMv6/squeak.stack.spur/build/mvm
index 639b0440ba..b74864b48c 100755
--- a/building/linux32ARMv6/squeak.stack.spur/build/mvm
+++ b/building/linux32ARMv6/squeak.stack.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack Spur VM and threaded heartbeat
 INSTALLDIR=sqstkspur32linuxhtRPi
 OPT="-g -O3 -DNDEBUG -DDEBUGVM=0 -DNO_VM_PROFILE=1"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.stack.v3/build.assert/mvm b/building/linux32ARMv6/squeak.stack.v3/build.assert/mvm
index 381e05a549..611dbabd69 100755
--- a/building/linux32ARMv6/squeak.stack.v3/build.assert/mvm
+++ b/building/linux32ARMv6/squeak.stack.v3/build.assert/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Stack VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqstklinuxhtRPi
 OPT="-g3 -O1 -DDEBUGVM=0"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.stack.v3/build.debug/mvm b/building/linux32ARMv6/squeak.stack.v3/build.debug/mvm
index 4553810c1d..38cdd3f6a9 100755
--- a/building/linux32ARMv6/squeak.stack.v3/build.debug/mvm
+++ b/building/linux32ARMv6/squeak.stack.v3/build.debug/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Stack VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqstklinuxhtRPi
 OPT="-g3 -O0 -DDEBUGVM=1"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/squeak.stack.v3/build/mvm b/building/linux32ARMv6/squeak.stack.v3/build/mvm
index e1140b67f7..87aee94789 100755
--- a/building/linux32ARMv6/squeak.stack.v3/build/mvm
+++ b/building/linux32ARMv6/squeak.stack.v3/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstklinuxhtRPi
 OPT="-g -O3 -DNDEBUG -DDEBUGVM=0 -DNO_VM_PROFILE=1"
@@ -10,7 +11,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-march=armv6 -mfpu=vfp -mfloat-abi=hard" \
 	CFLAGS="$OPT -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag and Raspbian lacks `readlinks`
-make -j4 install prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make -j4 install prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32ARMv6/third-party/mvm b/building/linux32ARMv6/third-party/mvm
index 7c7c206fb7..846d3d0efa 100755
--- a/building/linux32ARMv6/third-party/mvm
+++ b/building/linux32ARMv6/third-party/mvm
@@ -3,11 +3,11 @@ set -e
 # mvm <libname> [operation] [path]
 
 pushd .
-cd `dirname $0`
+cd "$(dirname "$0")"
 case $2 in 
-	install) 	make -fMakefile.$1 install THIRDPARTYINSTALLDIR=$3 ;;
-	clean) 		make -fMakefile.$1 clean ;;
-	*) 			make -fMakefile.$1 all ;;
+	install) 	make -f"Makefile.$1" install "THIRDPARTYINSTALLDIR=$3" ;;
+	clean) 		make -f"Makefile.$1" clean ;;
+	*) 			make -f"Makefile.$1" all ;;
 esac
 popd
 
diff --git a/building/linux32x86/squeak.cog.spur/build.assert.itimerheartbeat/mvm b/building/linux32x86/squeak.cog.spur/build.assert.itimerheartbeat/mvm
index a73f6b8024..c762eb85c6 100755
--- a/building/linux32x86/squeak.cog.spur/build.assert.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.cog.spur/build.assert.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.spur/build.assert/mvm b/building/linux32x86/squeak.cog.spur/build.assert/mvm
index 71b2c6ab07..9c3f156949 100755
--- a/building/linux32x86/squeak.cog.spur/build.assert/mvm
+++ b/building/linux32x86/squeak.cog.spur/build.assert/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.spur/build.debug.itimerheartbeat/mvm b/building/linux32x86/squeak.cog.spur/build.debug.itimerheartbeat/mvm
index a2ca762938..d0d4b6644d 100755
--- a/building/linux32x86/squeak.cog.spur/build.debug.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.cog.spur/build.debug.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.spur/build.debug/mvm b/building/linux32x86/squeak.cog.spur/build.debug/mvm
index 70e61a7609..fbc533edc9 100755
--- a/building/linux32x86/squeak.cog.spur/build.debug/mvm
+++ b/building/linux32x86/squeak.cog.spur/build.debug/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.spur/build.itimerheartbeat/mvm b/building/linux32x86/squeak.cog.spur/build.itimerheartbeat/mvm
index 8f5723761f..fde0326dae 100755
--- a/building/linux32x86/squeak.cog.spur/build.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.cog.spur/build.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.spur/build/mvm b/building/linux32x86/squeak.cog.spur/build/mvm
index 7e88742d96..85c60c653d 100755
--- a/building/linux32x86/squeak.cog.spur/build/mvm
+++ b/building/linux32x86/squeak.cog.spur/build/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.v3/build.assert.itimerheartbeat/mvm b/building/linux32x86/squeak.cog.v3/build.assert.itimerheartbeat/mvm
index 07704862b3..6da1bf30eb 100755
--- a/building/linux32x86/squeak.cog.v3/build.assert.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.cog.v3/build.assert.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -29,7 +30,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.v3/build.assert/mvm b/building/linux32x86/squeak.cog.v3/build.assert/mvm
index 3de63f906b..312fa450a2 100755
--- a/building/linux32x86/squeak.cog.v3/build.assert/mvm
+++ b/building/linux32x86/squeak.cog.v3/build.assert/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -29,7 +30,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.v3/build.debug.itimerheartbeat/mvm b/building/linux32x86/squeak.cog.v3/build.debug.itimerheartbeat/mvm
index 15322eb561..b69ee3791a 100755
--- a/building/linux32x86/squeak.cog.v3/build.debug.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.cog.v3/build.debug.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -29,7 +30,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.v3/build.debug/mvm b/building/linux32x86/squeak.cog.v3/build.debug/mvm
index 6eb5c4e265..08e09df085 100755
--- a/building/linux32x86/squeak.cog.v3/build.debug/mvm
+++ b/building/linux32x86/squeak.cog.v3/build.debug/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -29,7 +30,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.v3/build.itimerheartbeat/mvm b/building/linux32x86/squeak.cog.v3/build.itimerheartbeat/mvm
index ea4ba4887c..4b1b4fa717 100755
--- a/building/linux32x86/squeak.cog.v3/build.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.cog.v3/build.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.cog.v3/build/mvm b/building/linux32x86/squeak.cog.v3/build/mvm
index 1d58d91e0c..76ac13c721 100755
--- a/building/linux32x86/squeak.cog.v3/build/mvm
+++ b/building/linux32x86/squeak.cog.v3/build/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.sista.spur/build.assert.itimerheartbeat/mvm b/building/linux32x86/squeak.sista.spur/build.assert.itimerheartbeat/mvm
index 9898bb42d8..bef396dd17 100755
--- a/building/linux32x86/squeak.sista.spur/build.assert.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.sista.spur/build.assert.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.sista.spur/build.assert/mvm b/building/linux32x86/squeak.sista.spur/build.assert/mvm
index 81cd10cc95..c1c6dbbfb9 100755
--- a/building/linux32x86/squeak.sista.spur/build.assert/mvm
+++ b/building/linux32x86/squeak.sista.spur/build.assert/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.sista.spur/build.debug.itimerheartbeat/mvm b/building/linux32x86/squeak.sista.spur/build.debug.itimerheartbeat/mvm
index 3fc9824e53..8d2f54bc06 100755
--- a/building/linux32x86/squeak.sista.spur/build.debug.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.sista.spur/build.debug.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.sista.spur/build.debug/mvm b/building/linux32x86/squeak.sista.spur/build.debug/mvm
index a2365ddd69..7dec535037 100755
--- a/building/linux32x86/squeak.sista.spur/build.debug/mvm
+++ b/building/linux32x86/squeak.sista.spur/build.debug/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.sista.spur/build.itimerheartbeat/mvm b/building/linux32x86/squeak.sista.spur/build.itimerheartbeat/mvm
index a2a2b2ccd0..f73f252df2 100755
--- a/building/linux32x86/squeak.sista.spur/build.itimerheartbeat/mvm
+++ b/building/linux32x86/squeak.sista.spur/build.itimerheartbeat/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.sista.spur/build/mvm b/building/linux32x86/squeak.sista.spur/build/mvm
index 2e967e59b8..23238157e1 100755
--- a/building/linux32x86/squeak.sista.spur/build/mvm
+++ b/building/linux32x86/squeak.sista.spur/build/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.stack.spur/build.assert/mvm b/building/linux32x86/squeak.stack.spur/build.assert/mvm
index 6db8aa38d6..6ddf982a10 100755
--- a/building/linux32x86/squeak.stack.spur/build.assert/mvm
+++ b/building/linux32x86/squeak.stack.spur/build.assert/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.stack.spur/build.debug/mvm b/building/linux32x86/squeak.stack.spur/build.debug/mvm
index 9e5c39fd4f..bbd2ffbfe7 100755
--- a/building/linux32x86/squeak.stack.spur/build.debug/mvm
+++ b/building/linux32x86/squeak.stack.spur/build.debug/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.stack.spur/build/mvm b/building/linux32x86/squeak.stack.spur/build/mvm
index 549455ac64..6936ac6356 100755
--- a/building/linux32x86/squeak.stack.spur/build/mvm
+++ b/building/linux32x86/squeak.stack.spur/build/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.stack.v3/build.assert/mvm b/building/linux32x86/squeak.stack.v3/build.assert/mvm
index c026916940..334d66e874 100755
--- a/building/linux32x86/squeak.stack.v3/build.assert/mvm
+++ b/building/linux32x86/squeak.stack.v3/build.assert/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.stack.v3/build.debug/mvm b/building/linux32x86/squeak.stack.v3/build.debug/mvm
index f2b0c34220..649cdb97c1 100755
--- a/building/linux32x86/squeak.stack.v3/build.debug/mvm
+++ b/building/linux32x86/squeak.stack.v3/build.debug/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -17,7 +18,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/squeak.stack.v3/build/mvm b/building/linux32x86/squeak.stack.v3/build/mvm
index 11735e28f2..862427d34c 100755
--- a/building/linux32x86/squeak.stack.v3/build/mvm
+++ b/building/linux32x86/squeak.stack.v3/build/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i*86) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -18,7 +19,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -31,7 +32,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	TARGET_ARCH="-m32" \
 	CFLAGS="$OPT -msse2"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux32x86/third-party/mvm b/building/linux32x86/third-party/mvm
index 22da4fbd9d..0eafe76024 100755
--- a/building/linux32x86/third-party/mvm
+++ b/building/linux32x86/third-party/mvm
@@ -3,11 +3,11 @@ set -e
 # mvm <libname> [operation] [path]
 
 pushd .
-cd `dirname $0`
+cd "$(dirname "$0")"
 case $2 in 
-	install) 	make -f Makefile.$1 install THIRDPARTYINSTALLDIR=$3 ;;
-	clean) 		make -f Makefile.$1 clean ;;
-	*) 			make -f Makefile.$1 all ;;
+	install) 	make -f "Makefile.$1" install "THIRDPARTYINSTALLDIR=$3" ;;
+	clean) 		make -f "Makefile.$1" clean ;;
+	*) 			make -f "Makefile.$1" all ;;
 esac
 popd
 
diff --git a/building/linux64/squeak.stack.spur/build/mvm b/building/linux64/squeak.stack.spur/build/mvm
index 6568a20f46..1b08a8e7ca 100755
--- a/building/linux64/squeak.stack.spur/build/mvm
+++ b/building/linux64/squeak.stack.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstkspur64linuxht
 
@@ -8,7 +9,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -23,7 +24,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	VM_WORD_SIZE="64" \
 	VM_CFLAGS="-DNDEBUG -DDEBUGVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.cog.spur/build.assert/mvm b/building/linux64ARMv8/squeak.cog.spur/build.assert/mvm
index 1fe5e22339..de8463f820 100755
--- a/building/linux64ARMv8/squeak.cog.spur/build.assert/mvm
+++ b/building/linux64ARMv8/squeak.cog.spur/build.assert/mvm
@@ -1,27 +1,28 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Cog Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqcogspur64ARMv8linuxht
 # armv8.N-a all fail in signalSemaphoreWithIndex for N in 1,2,3,4,5
 MACHINE="-march=armv8-a -mtune=cortex-a72"
 OPT="-g3 -O1 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -DDEBUGVM=0"
 
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=0"
 # librt and libpthread functions now supplied by libc.
 # Many Linux systems supply empty library files but
 # OpenBSD does not.
     LIBRT=""
 # OpenBSD has problems with fast-bitblt under gcc and clang
-    FASTBITBLT=""
+    export FASTBITBLT=""
 # Prefer clang over gcc if available
-    if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+    if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 else # non-OpenBSD Linux
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=1"
     LIBRT="-lrt"
 # Linux on ARMv8 properly compiles fast-bitblt under gcc
 # but compiles-and-segfaults with clang. Use gcc for now.
-	FASTBITBLT=" --enable-fast-bitblt "
+	export FASTBITBLT=" --enable-fast-bitblt "
 	CC=gcc
 fi
 
@@ -30,7 +31,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -45,7 +46,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS=$LIBRT
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.cog.spur/build.debug/mvm b/building/linux64ARMv8/squeak.cog.spur/build.debug/mvm
index 235c119042..0de14cb4ec 100755
--- a/building/linux64ARMv8/squeak.cog.spur/build.debug/mvm
+++ b/building/linux64ARMv8/squeak.cog.spur/build.debug/mvm
@@ -1,27 +1,28 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Cog Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqcogspur64ARMv8linuxht
 # armv8.N-a all fail in signalSemaphoreWithIndex for N in 1,2,3,4,5
 MACHINE="-march=armv8-a -mtune=cortex-a72"
 OPT="-g3 -O0 -DDEBUGVM=1 -DAIO_DEBUG=1"
 
-if [ `uname` = "OpenBSD" ]; then
-    DUALMAP="-DDUAL_MAPPED_CODE_ZONE=0"
+if [ "$(uname)" = "OpenBSD" ]; then
+    export DUALMAP="-DDUAL_MAPPED_CODE_ZONE=0"
 # librt and libpthread functions now supplied by libc.
 # Many Linux systems supply empty library files but
 # OpenBSD does not.
-    LIBRT=""
+    export LIBRT=""
 # OpenBSD has problems with fast-bitblt under gcc and clang
-    FASTBITBLT=""
+    export FASTBITBLT=""
 # Prefer clang over gcc if available
-    if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+    if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 else # non-OpenBSD Linux
-    DUALMAP="-DDUAL_MAPPED_CODE_ZONE=1"
-    LIBRT="-lrt"
+    export DUALMAP="-DDUAL_MAPPED_CODE_ZONE=1"
+    export LIBRT="-lrt"
 # Linux on ARMv8 properly compiles fast-bitblt under gcc
 # but compiles-and-segfaults with clang. Use gcc for now.
-	FASTBITBLT=" --enable-fast-bitblt "
+	export FASTBITBLT=" --enable-fast-bitblt "
 	CC=gcc
 fi
 
@@ -30,7 +31,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -45,7 +46,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS=$LIBRT
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.cog.spur/build/mvm b/building/linux64ARMv8/squeak.cog.spur/build/mvm
index d299659380..6a6d8e4ba0 100755
--- a/building/linux64ARMv8/squeak.cog.spur/build/mvm
+++ b/building/linux64ARMv8/squeak.cog.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Cog Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqcogspur64ARMv8linuxht
 # armv8.N-a all fail in signalSemaphoreWithIndex for N in 1,2,3,4,5
@@ -8,7 +9,7 @@ MACHINE="-march=armv8-a -mtune=cortex-a72"
 OPT="-g -O2 -DNDEBUG -DDEBUGVM=0 -D_GNU_SOURCE -DUSEEVDEV"
 ##OPT="-g -O3  -DMUSL -DNDEBUG -DDEBUGVM=0"
 
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=0"
 # librt and libpthread functions now supplied by libc.
 # Many Linux systems supply empty library files but
@@ -32,7 +33,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -42,13 +43,13 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	--with-vmversion=5.0 --with-src=src/spur64.cog \
 	--without-npsqueak \
 	--with-scriptname=spur64 \
-	$FASTBITBLT \
+	"$FASTBITBLT" \
 	CC=$CC \
 	CFLAGS="$MACHINE $OPT -DCOGMTVM=0 $DUALMAP" \
 	LIBS=$LIBRT
 ##	--without-vm-display-fbdev --without-npsqueak \
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.cogmt.spur/build.assert/mvm b/building/linux64ARMv8/squeak.cogmt.spur/build.assert/mvm
index 888364b321..13a9c85f87 100755
--- a/building/linux64ARMv8/squeak.cogmt.spur/build.assert/mvm
+++ b/building/linux64ARMv8/squeak.cogmt.spur/build.assert/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Cog Spur MT VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqcogspurmt64ARMv8linuxht
 # armv8.N-a all fail in signalSemaphoreWithIndex for N in 1,2,3,4,5
@@ -11,7 +12,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -27,7 +28,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS="-lrt"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.cogmt.spur/build.debug/mvm b/building/linux64ARMv8/squeak.cogmt.spur/build.debug/mvm
index 869da456e6..c3e23f30e9 100755
--- a/building/linux64ARMv8/squeak.cogmt.spur/build.debug/mvm
+++ b/building/linux64ARMv8/squeak.cogmt.spur/build.debug/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Cog Spur MT VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqcogspurmt64ARMv8linuxht
 # armv8.N-a all fail in signalSemaphoreWithIndex for N in 1,2,3,4,5
@@ -11,7 +12,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -27,7 +28,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS="-lrt"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.cogmt.spur/build/mvm b/building/linux64ARMv8/squeak.cogmt.spur/build/mvm
index e816f75044..a0cb942ffb 100755
--- a/building/linux64ARMv8/squeak.cogmt.spur/build/mvm
+++ b/building/linux64ARMv8/squeak.cogmt.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Cog Spur MT VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqcogspurmt64ARMv8linuxht
 # armv8.N-a all fail in signalSemaphoreWithIndex for N in 1,2,3,4,5
@@ -12,7 +13,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -28,7 +29,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS="-lrt"
 ##	--without-vm-display-fbdev --without-npsqueak \
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.stack.spur/build.assert/mvm b/building/linux64ARMv8/squeak.stack.spur/build.assert/mvm
index 8d0f450a18..74c1b9e67f 100755
--- a/building/linux64ARMv8/squeak.stack.spur/build.assert/mvm
+++ b/building/linux64ARMv8/squeak.stack.spur/build.assert/mvm
@@ -1,24 +1,25 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqstkspur64ARMv8linuxht
 OPT="-g3 -O1 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -DDEBUGVM=0"
 
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=0"
 else
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=1"
 fi
 
 # Prefer clang over gcc if available
-if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -33,7 +34,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CC=$CC \
 	CFLAGS="$OPT -D__ARM_ARCH_ISA_A64 -DARM64 -D__arm__ -D__arm64__ -D__aarch64__ $DUALMAP"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.stack.spur/build.debug/mvm b/building/linux64ARMv8/squeak.stack.spur/build.debug/mvm
index 5e1a334e9c..85e23acfb9 100755
--- a/building/linux64ARMv8/squeak.stack.spur/build.debug/mvm
+++ b/building/linux64ARMv8/squeak.stack.spur/build.debug/mvm
@@ -1,12 +1,13 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqstkspur64ARMv8linuxht
 OPT="-g3 -O0 -DDEBUG -DDEBUGVM=1 -DDEBUG_EVENTS -DDEBUG_KEYBOARD_EVENTS -DDEBUG_MOUSE_EVENTS -DUSEEVDEV -DMUSL"
 
 ### OPT="-g3 -O0 -DDEBUGVM=1"
 
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=0"
 else
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=1"
@@ -20,7 +21,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && (make -n reallyclean;make reallyclean)
@@ -36,7 +37,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CFLAGS="$OPT -D__ARM_ARCH_ISA_A64 -DARM64 -D__arm__ -D__arm64__ -D__aarch64__ $DUALMAP"
 ##	--without-vm-display-fbdev --without-npsqueak \
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/squeak.stack.spur/build/mvm b/building/linux64ARMv8/squeak.stack.spur/build/mvm
index 08e022da22..5f318ef7d3 100755
--- a/building/linux64ARMv8/squeak.stack.spur/build/mvm
+++ b/building/linux64ARMv8/squeak.stack.spur/build/mvm
@@ -1,25 +1,26 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstkspur64ARMv8linuxht
 OPT="-g -O2 -DNDEBUG -DDEBUGVM=0 -DMUSL -D_GNU_SOURCE -DUSEEVDEV"
 ### OPT="-g -O2 -DNDEBUG -DDEBUGVM=0"
 
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=0"
 else
     DUALMAP="-DDUAL_MAPPED_CODE_ZONE=1"
 fi
 
 # Prefer clang over gcc if available
-if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -35,7 +36,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CFLAGS="$OPT -D__ARM_ARCH_ISA_A64 -DARM64 -D__arm__ -D__arm64__ -D__aarch64__ $DUALMAP"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64ARMv8/third-party/mvm b/building/linux64ARMv8/third-party/mvm
index cfbd0d9346..5c93361519 100755
--- a/building/linux64ARMv8/third-party/mvm
+++ b/building/linux64ARMv8/third-party/mvm
@@ -3,11 +3,11 @@ set -e
 # mvm <libname> [operation] [path]
 
 pushd .
-cd `dirname $0`
+cd "$(dirname "$0")"
 case $2 in 
-	install) 	make -fMakefile.$1 install THIRDPARTYINSTALLDIR=$3 ;;
-	clean) 		make -fMakefile.$1 clean ;;
-	*) 			make -f Makefile.$1 all ;;
+	install) 	make -f "Makefile.$1" install THIRDPARTYINSTALLDIR="$3" ;;
+	clean) 		make -f "Makefile.$1" clean ;;
+	*) 			make -f "Makefile.$1" all ;;
 esac
 popd
 
diff --git a/building/linux64riscv/squeak.stack.spur/build.assert/mvm b/building/linux64riscv/squeak.stack.spur/build.assert/mvm
index 3b93b55d95..deb9ea2f10 100755
--- a/building/linux64riscv/squeak.stack.spur/build.assert/mvm
+++ b/building/linux64riscv/squeak.stack.spur/build.assert/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqstkspur64ARMv8linuxht
 OPT="-g3 -O1 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -DDEBUGVM=0"
@@ -9,7 +10,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -22,10 +23,10 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	--with-scriptname=spur64 \
 	CC=gcc \
 	VM_WORD_SIZE="64" \
-	VM_CFLAGS="$OPT"
+	VM_CFLAGS="$OPT" \
 	CFLAGS="$OPT"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64riscv/squeak.stack.spur/build.debug/mvm b/building/linux64riscv/squeak.stack.spur/build.debug/mvm
index db9ddc39e0..10c666a33f 100755
--- a/building/linux64riscv/squeak.stack.spur/build.debug/mvm
+++ b/building/linux64riscv/squeak.stack.spur/build.debug/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqstkspur64ARMv8linuxht
 OPT="-g3 -O0 -DDEBUG -DDEBUGVM=1 -D_GNU_SOURCE"
@@ -11,7 +12,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -24,11 +25,11 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	--with-scriptname=spur64 \
 	CC=gcc \
 	VM_WORD_SIZE="64" \
-	VM_CFLAGS="$OPT"
+	VM_CFLAGS="$OPT" \
 	CFLAGS="$OPT"
 ##	--without-vm-display-fbdev --without-npsqueak \
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64riscv/squeak.stack.spur/build/mvm b/building/linux64riscv/squeak.stack.spur/build/mvm
index 2798375b13..46d88efd5e 100755
--- a/building/linux64riscv/squeak.stack.spur/build/mvm
+++ b/building/linux64riscv/squeak.stack.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstkspur64linuxht
 OPT="-g -O2 -DNDEBUG -DDEBUGVM=0 -D_GNU_SOURCE"
@@ -9,7 +10,7 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -21,11 +22,11 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	--without-npsqueak \
 	CC=gcc \
 	VM_WORD_SIZE="64" \
-	VM_CFLAGS="$OPT"
+	VM_CFLAGS="$OPT" \
 	CFLAGS="$OPT"
 ## --without-vm-display-fbdev
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.cog.spur/build.assert.itimerheartbeat/mvm b/building/linux64x64/squeak.cog.spur/build.assert.itimerheartbeat/mvm
index b4029e102e..ff0a254e74 100755
--- a/building/linux64x64/squeak.cog.spur/build.assert.itimerheartbeat/mvm
+++ b/building/linux64x64/squeak.cog.spur/build.assert.itimerheartbeat/mvm
@@ -1,11 +1,12 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert VM with VM profiler and itimer heartbeat
 INSTALLDIR=assert/sqcogspur64linux
 OPT="-g3 -O1 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -DDEBUGVM=0"
 
 # Prefer clang over gcc if available
-if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
@@ -13,7 +14,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -27,7 +28,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	CC=$CC \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.cog.spur/build.assert/mvm b/building/linux64x64/squeak.cog.spur/build.assert/mvm
index f6c8c94075..94a233a5e9 100755
--- a/building/linux64x64/squeak.cog.spur/build.assert/mvm
+++ b/building/linux64x64/squeak.cog.spur/build.assert/mvm
@@ -1,23 +1,24 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqcogspur64linuxht
 OPT="-g3 -O1 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -DDEBUGVM=0"
 
 # Prefer clang over gcc if available
-if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 
 # librt and libpthread funs now supplied by libc
 # Many Linux systems supply empty library files 
 # but OpenBSD does not.
-if [ `uname` = "OpenBSD" ]; then LIBRT=""; else LIBRT="-lrt"; fi
+if [ "$(uname)" = "OpenBSD" ]; then LIBRT=""; else LIBRT="-lrt"; fi
 
 CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 LIBS=$LIBRT
 LDFLAGS=""
 
 # Special treatment for OpenBSD Linux
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
 	CFLAGS="$CFLAGS -I/usr/local/include"
 	LIBS="$LIBS -lexecinfo"
 	LDFLAGS="$LDFLAGS -L/usr/local/lib"
@@ -29,7 +30,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -46,7 +47,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	LDFLAGS="$LDFLAGS"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.cog.spur/build.debug.itimerheartbeat/mvm b/building/linux64x64/squeak.cog.spur/build.debug.itimerheartbeat/mvm
index bbb63282c5..28237fa9b0 100755
--- a/building/linux64x64/squeak.cog.spur/build.debug.itimerheartbeat/mvm
+++ b/building/linux64x64/squeak.cog.spur/build.debug.itimerheartbeat/mvm
@@ -1,11 +1,12 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Spur VM with VM profiler and itimer heartbeat
 INSTALLDIR=debug/sqcogspur64linux
 OPT="-g3 -O0 -DDEBUGVM=1"
 
 # Prefer clang over gcc if available
-if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
@@ -13,7 +14,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -27,7 +28,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	CC=$CC \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.cog.spur/build.debug/mvm b/building/linux64x64/squeak.cog.spur/build.debug/mvm
index 5814694860..4bbb72f5ce 100755
--- a/building/linux64x64/squeak.cog.spur/build.debug/mvm
+++ b/building/linux64x64/squeak.cog.spur/build.debug/mvm
@@ -1,23 +1,24 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqcogspur64linuxht
 OPT="-g3 -O0 -DDEBUGVM=1"
 
 # Prefer clang over gcc if available
-if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 
 # librt and libpthread funs now supplied by libc
 # Many Linux systems supply empty library files 
 # but OpenBSD does not.
-if [ `uname` = "OpenBSD" ]; then LIBRT=""; else LIBRT="-lrt"; fi
+if [ "$(uname)" = "OpenBSD" ]; then LIBRT=""; else LIBRT="-lrt"; fi
 
 CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 LIBS=$LIBRT
 LDFLAGS=""
 
 # Special treatment for OpenBSD Linux
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
 	CFLAGS="$CFLAGS -I/usr/local/include"
 	LIBS="$LIBS -lexecinfo"
 	LDFLAGS="$LDFLAGS -L/usr/local/lib"
@@ -29,7 +30,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -46,7 +47,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	LDFLAGS="$LDFLAGS"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.cog.spur/build.itimerheartbeat/mvm b/building/linux64x64/squeak.cog.spur/build.itimerheartbeat/mvm
index 6586c5301d..b4c401fc67 100755
--- a/building/linux64x64/squeak.cog.spur/build.itimerheartbeat/mvm
+++ b/building/linux64x64/squeak.cog.spur/build.itimerheartbeat/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Spur VM with VM profiler and itimer heartbeat
 INSTALLDIR=sqcogspur64linux
 # Some gcc versions create a broken VM using -O2
@@ -14,7 +15,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -28,7 +29,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	CC=$CC \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0 -DITIMER_HEARTBEAT=1"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.cog.spur/build/mvm b/building/linux64x64/squeak.cog.spur/build/mvm
index 5f8639bf78..873b4845bf 100755
--- a/building/linux64x64/squeak.cog.spur/build/mvm
+++ b/building/linux64x64/squeak.cog.spur/build/mvm
@@ -1,24 +1,25 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqcogspur64linuxht
 # Some gcc versions create a broken VM using -O2
 OPT="-g -O2 -DNDEBUG -DDEBUGVM=0"
 
 # Prefer clang over gcc if available
-if [ -n "$(command -v clang || true)" ]; then CC=clang; else CC=gcc; fi
+if command -v clang > /dev/null; then CC=clang; else CC=gcc; fi
 
 # librt and libpthread funs now supplied by libc
 # Many Linux systems supply empty library files 
 # but OpenBSD does not.
-if [ `uname` = "OpenBSD" ]; then LIBRT=""; else LIBRT="-lrt"; fi
+if [ "$(uname)" = "OpenBSD" ]; then LIBRT=""; else LIBRT="-lrt"; fi
 
 CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 LIBS=$LIBRT
 LDFLAGS=""
 
 # Special treatment for OpenBSD Linux
-if [ `uname` = "OpenBSD" ]; then
+if [ "$(uname)" = "OpenBSD" ]; then
 	CFLAGS="$CFLAGS -I/usr/local/include"
 	LIBS="$LIBS -lexecinfo"
 	LDFLAGS="$LDFLAGS -L/usr/local/lib"
@@ -30,7 +31,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -46,7 +47,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	LIBS="$LIBS" \
 	LDFLAGS="$LDFLAGS"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.sista.spur/build.assert/mvm b/building/linux64x64/squeak.sista.spur/build.assert/mvm
index 96918def63..b60e160723 100755
--- a/building/linux64x64/squeak.sista.spur/build.assert/mvm
+++ b/building/linux64x64/squeak.sista.spur/build.assert/mvm
@@ -1,19 +1,20 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Sista Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqsisspur64linuxht
 OPT="-g3 -O1 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -DDEBUGVM=0"
 
 # Prefer clang over gcc, but use gcc if clang isn't available...
 CC=gcc
-if [ -x /usr/bin/clang ]; then CC=clang; fi
+if command -v clang > /dev/null; then CC=clang; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -27,7 +28,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CC=$CC \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.sista.spur/build.debug/mvm b/building/linux64x64/squeak.sista.spur/build.debug/mvm
index 054286fa75..0cd9d605d0 100755
--- a/building/linux64x64/squeak.sista.spur/build.debug/mvm
+++ b/building/linux64x64/squeak.sista.spur/build.debug/mvm
@@ -1,19 +1,20 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Sista Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqsisspur64linuxht
 OPT="-g3 -O0 -DDEBUGVM=1"
 
 # Prefer clang over gcc, but use gcc if clang isn't available...
 CC=gcc
-if [ -x /usr/bin/clang ]; then CC=clang; fi
+if command -v clang > /dev/null; then CC=clang; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -27,7 +28,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CC=$CC \
 	CFLAGS="$OPT -msse2 -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.sista.spur/build/mvm b/building/linux64x64/squeak.sista.spur/build/mvm
index 8d5ec2f77c..c2f2802042 100755
--- a/building/linux64x64/squeak.sista.spur/build/mvm
+++ b/building/linux64x64/squeak.sista.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Sista Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqsisspur64linuxht
 OPT="-g -O1 -DNDEBUG -DDEBUGVM=0"
@@ -17,14 +18,14 @@ esac
 
 # Prefer clang over gcc, but use gcc if clang isn't available...
 CC=gcc
-if [ -x /usr/bin/clang ]; then CC=clang; fi
+if command -v clang > /dev/null; then CC=clang; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && make reallyclean
@@ -40,7 +41,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS="$LIBS" \
 	LDFLAGS="$LDFLAGS"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.stack.spur/build.assert/mvm b/building/linux64x64/squeak.stack.spur/build.assert/mvm
index 420b62f575..2a2dbc5836 100755
--- a/building/linux64x64/squeak.stack.spur/build.assert/mvm
+++ b/building/linux64x64/squeak.stack.spur/build.assert/mvm
@@ -1,12 +1,13 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # assert Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=assert/sqstkspur64linuxht
 OPT="-g3 -O1 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -DDEBUGVM=0"
 
 # Prefer clang over gcc, but use gcc if clang isn't available...
 CC=gcc
-if [ -x /usr/bin/clang ]; then CC=clang; fi
+if command -v gcc >/dev/null; then CC=clang; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
@@ -14,7 +15,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CFLAGS="$OPT -msse2"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.stack.spur/build.debug/mvm b/building/linux64x64/squeak.stack.spur/build.debug/mvm
index 76cb216e04..152ce4edfe 100755
--- a/building/linux64x64/squeak.stack.spur/build.debug/mvm
+++ b/building/linux64x64/squeak.stack.spur/build.debug/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # debug Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=debug/sqstkspur64linuxht
 OPT="-g3 -O0 -DDEBUGVM=1"
@@ -14,7 +15,7 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -30,7 +31,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CFLAGS="$OPT -msse2"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/squeak.stack.spur/build/mvm b/building/linux64x64/squeak.stack.spur/build/mvm
index 631e8ab732..7bf0b9a0bf 100755
--- a/building/linux64x64/squeak.stack.spur/build/mvm
+++ b/building/linux64x64/squeak.stack.spur/build/mvm
@@ -1,19 +1,20 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstkspur64linuxht
 OPT="-g -O1 -DNDEBUG -DDEBUGVM=0"
 
 # Prefer clang over gcc, but use gcc if clang isn't available...
 CC=gcc
-if [ -x /usr/bin/clang ]; then CC=clang; fi
+if command -v clang > /dev/null; then CC=clang; fi
 
 if [ $# -ge 1 ]; then
 	INSTALLDIR="$1"; shift
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && make reallyclean
@@ -29,7 +30,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	CFLAGS="$OPT -msse2"
 
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer make install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-make install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG ; test ${PIPESTATUS[0]} -eq 0
+make install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/linux64x64/third-party/mvm b/building/linux64x64/third-party/mvm
index 259d03d490..3fbdd6bee9 100755
--- a/building/linux64x64/third-party/mvm
+++ b/building/linux64x64/third-party/mvm
@@ -3,10 +3,10 @@ set -e
 # mvm <libname> [operation] [path]
 
 pushd .
-cd `dirname $0`
+cd "$(dirname "$0")"
 case $2 in 
-	install) 	make -f Makefile.$1 install THIRDPARTYINSTALLDIR=$3 ;;
-	clean) 		make -f Makefile.$1 clean ;;
-	*) 			make -f Makefile.$1 all ;;
+	install) 	make -f "Makefile.$1" install THIRDPARTYINSTALLDIR="$3" ;;
+	clean) 		make -f "Makefile.$1" clean ;;
+	*) 			make -f "Makefile.$1" all ;;
 esac
-popd
\ No newline at end of file
+popd
diff --git a/building/macos32x86/squeak.cog.spur/mvm b/building/macos32x86/squeak.cog.spur/mvm
index bd724e6930..2ea7f7eb40 100755
--- a/building/macos32x86/squeak.cog.spur/mvm
+++ b/building/macos32x86/squeak.cog.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -12,7 +13,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -20,15 +21,15 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/macos32x86/squeak.cog.v3/mvm b/building/macos32x86/squeak.cog.v3/mvm
index bd724e6930..5e5b5be6f7 100755
--- a/building/macos32x86/squeak.cog.v3/mvm
+++ b/building/macos32x86/squeak.cog.v3/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -7,12 +8,12 @@ else
 	while getopts 'ASTadf?' opt "$@"; do
 		case $opt in
 		A)	A=1;D=1;F=1;;
-		S) echo -S not yet implemented\; use -A for now 1>&1; exit 1;;
-		T) echo -T not yet implemented\; use -A for now 1>&1; exit 1;;
+		S) echo "-S not yet implemented\; use -A for now"; exit 1;;
+		T) echo "-T not yet implemented\; use -A for now"; exit 1;;
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -20,15 +21,15 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/macos32x86/squeak.sista.spur/mvm b/building/macos32x86/squeak.sista.spur/mvm
index bd724e6930..2ea7f7eb40 100755
--- a/building/macos32x86/squeak.sista.spur/mvm
+++ b/building/macos32x86/squeak.sista.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -12,7 +13,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -20,15 +21,15 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/macos32x86/squeak.stack.spur/mvm b/building/macos32x86/squeak.stack.spur/mvm
index bd724e6930..2ea7f7eb40 100755
--- a/building/macos32x86/squeak.stack.spur/mvm
+++ b/building/macos32x86/squeak.stack.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -12,7 +13,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -20,15 +21,15 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/macos32x86/squeak.stack.v3/mvm b/building/macos32x86/squeak.stack.v3/mvm
index bd724e6930..e01ef31398 100755
--- a/building/macos32x86/squeak.stack.v3/mvm
+++ b/building/macos32x86/squeak.stack.v3/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -7,12 +8,12 @@ else
 	while getopts 'ASTadf?' opt "$@"; do
 		case $opt in
 		A)	A=1;D=1;F=1;;
-		S) echo -S not yet implemented\; use -A for now 1>&1; exit 1;;
-		T) echo -T not yet implemented\; use -A for now 1>&1; exit 1;;
+		S) echo "-S not yet implemented; use -A for now"; exit 1;;
+		T) echo "-T not yet implemented; use -A for now"; exit 1;;
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -20,15 +21,15 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/macos64ARMv8/squeak.cog.spur/mvm b/building/macos64ARMv8/squeak.cog.spur/mvm
index a58a6df2b8..3529618bd0 100755
--- a/building/macos64ARMv8/squeak.cog.spur/mvm
+++ b/building/macos64ARMv8/squeak.cog.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -8,12 +9,12 @@ else
 	while getopts 'ASTadf?' opt "$@"; do
 		case $opt in
 		A)	A=1;D=1;F=1;;
-		S)	echo -S not yet implemented\; use -A for now 1>&1; exit 1;;
+		S)	echo "-S not yet implemented; use -A for now"; exit 1;;
 		T)	T=THREADING=multi;;
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,27 +22,27 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then
 	if [ -n "$D" ]; then
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
-		make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" 2>&1 | tee LOGF
 	fi
 else
 	if [ -n "$D" ]; then
-		make $@ $T debug 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" debug 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
-		make $@ $T assert 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" assert 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
-		make $@ $T 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/macos64ARMv8/squeak.sista.spur/mvm b/building/macos64ARMv8/squeak.sista.spur/mvm
index a58a6df2b8..20d7ad3849 100755
--- a/building/macos64ARMv8/squeak.sista.spur/mvm
+++ b/building/macos64ARMv8/squeak.sista.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -13,7 +14,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,27 +22,27 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then
 	if [ -n "$D" ]; then
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
-		make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" 2>&1 | tee LOGF
 	fi
 else
 	if [ -n "$D" ]; then
-		make $@ $T debug 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" debug 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
-		make $@ $T assert 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" assert 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
-		make $@ $T 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/macos64ARMv8/squeak.stack.spur/mvm b/building/macos64ARMv8/squeak.stack.spur/mvm
index a58a6df2b8..3529618bd0 100755
--- a/building/macos64ARMv8/squeak.stack.spur/mvm
+++ b/building/macos64ARMv8/squeak.stack.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -8,12 +9,12 @@ else
 	while getopts 'ASTadf?' opt "$@"; do
 		case $opt in
 		A)	A=1;D=1;F=1;;
-		S)	echo -S not yet implemented\; use -A for now 1>&1; exit 1;;
+		S)	echo "-S not yet implemented; use -A for now"; exit 1;;
 		T)	T=THREADING=multi;;
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,27 +22,27 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then
 	if [ -n "$D" ]; then
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
-		make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" 2>&1 | tee LOGF
 	fi
 else
 	if [ -n "$D" ]; then
-		make $@ $T debug 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" debug 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
-		make $@ $T assert 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" assert 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
-		make $@ $T 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/macos64x64/squeak.cog.spur/mvm b/building/macos64x64/squeak.cog.spur/mvm
index a58a6df2b8..4861713715 100755
--- a/building/macos64x64/squeak.cog.spur/mvm
+++ b/building/macos64x64/squeak.cog.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -13,7 +14,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,27 +22,27 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+    shift $(( OPTIND - 1))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then
 	if [ -n "$D" ]; then
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
-		make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" 2>&1 | tee LOGF
 	fi
 else
 	if [ -n "$D" ]; then
-		make $@ $T debug 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" debug 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
-		make $@ $T assert 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" assert 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
-		make $@ $T 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/macos64x64/squeak.sista.spur/mvm b/building/macos64x64/squeak.sista.spur/mvm
index a58a6df2b8..2636d38b30 100755
--- a/building/macos64x64/squeak.sista.spur/mvm
+++ b/building/macos64x64/squeak.sista.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -13,7 +14,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,27 +22,27 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+    shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then
 	if [ -n "$D" ]; then
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
-		make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" 2>&1 | tee LOGF
 	fi
 else
 	if [ -n "$D" ]; then
-		make $@ $T debug 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" debug 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
-		make $@ $T assert 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" assert 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
-		make $@ $T 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/macos64x64/squeak.stack.spur/mvm b/building/macos64x64/squeak.stack.spur/mvm
index a58a6df2b8..614beb310c 100755
--- a/building/macos64x64/squeak.stack.spur/mvm
+++ b/building/macos64x64/squeak.stack.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -13,7 +14,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,27 +22,27 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+    shift "$(( OPTIND - 1 ))"
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then
 	if [ -n "$D" ]; then
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
-		make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" 2>&1 | tee LOGF
 	fi
 else
 	if [ -n "$D" ]; then
-		make $@ $T debug 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" debug 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
-		make $@ $T assert 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" assert 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
-		make $@ $T 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" "$T" 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/minheadless.cmake/x64/squeak.cog.spur+sdl2/mvm b/building/minheadless.cmake/x64/squeak.cog.spur+sdl2/mvm
index 27576766ab..b3bb84cccd 100755
--- a/building/minheadless.cmake/x64/squeak.cog.spur+sdl2/mvm
+++ b/building/minheadless.cmake/x64/squeak.cog.spur+sdl2/mvm
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 if [ "$1" = "-f" ]; then
     ./mvm_configure_variant release Release
     make -C release all install
diff --git a/building/minheadless.cmake/x64/squeak.cog.spur/mvm b/building/minheadless.cmake/x64/squeak.cog.spur/mvm
index 27576766ab..b3bb84cccd 100755
--- a/building/minheadless.cmake/x64/squeak.cog.spur/mvm
+++ b/building/minheadless.cmake/x64/squeak.cog.spur/mvm
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 if [ "$1" = "-f" ]; then
     ./mvm_configure_variant release Release
     make -C release all install
diff --git a/building/minheadless.cmake/x86/squeak.cog.spur+sdl2/mvm b/building/minheadless.cmake/x86/squeak.cog.spur+sdl2/mvm
index 27576766ab..b3bb84cccd 100755
--- a/building/minheadless.cmake/x86/squeak.cog.spur+sdl2/mvm
+++ b/building/minheadless.cmake/x86/squeak.cog.spur+sdl2/mvm
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 if [ "$1" = "-f" ]; then
     ./mvm_configure_variant release Release
     make -C release all install
diff --git a/building/minheadless.cmake/x86/squeak.cog.spur/mvm b/building/minheadless.cmake/x86/squeak.cog.spur/mvm
index 27576766ab..b3bb84cccd 100755
--- a/building/minheadless.cmake/x86/squeak.cog.spur/mvm
+++ b/building/minheadless.cmake/x86/squeak.cog.spur/mvm
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 if [ "$1" = "-f" ]; then
     ./mvm_configure_variant release Release
     make -C release all install
diff --git a/building/minheadless.cmake/x86/squeak.stack.spur/mvm b/building/minheadless.cmake/x86/squeak.stack.spur/mvm
index a98e695133..b3bb84cccd 100755
--- a/building/minheadless.cmake/x86/squeak.stack.spur/mvm
+++ b/building/minheadless.cmake/x86/squeak.stack.spur/mvm
@@ -1,4 +1,4 @@
-#!/bin/env bash
+#!/usr/bin/env bash
 if [ "$1" = "-f" ]; then
     ./mvm_configure_variant release Release
     make -C release all install
diff --git a/building/sunos32x86/squeak.cog.spur/build/mvm b/building/sunos32x86/squeak.cog.spur/build/mvm
index 2699644ee6..908bfe31ec 100755
--- a/building/sunos32x86/squeak.cog.spur/build/mvm
+++ b/building/sunos32x86/squeak.cog.spur/build/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i86pc) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -22,11 +23,12 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && $MAKE reallyclean
 esac
+# this logic is broken || and && are not ternary operators
 test -f plugins.int || (test -f ../plugins.int && cp -p ../plugins.int . || cp -p ../../plugins.int .)
 test -f plugins.ext || (test -f ../plugins.ext && cp -p ../plugins.ext . || cp -p ../../plugins.ext .)
 test -f config.h || ../../../../platforms/unix/config/configure --without-npsqueak \
@@ -41,7 +43,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	LIBS="$LIBS" \
 	CFLAGS="$OPT -DCOGMTVM=0"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer $MAKE install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-$MAKE install-squeak install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG
+$MAKE install-squeak install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/sunos32x86/squeak.stack.spur/build/mvm b/building/sunos32x86/squeak.stack.spur/build/mvm
index 3bb9b469b5..a9606ddeef 100755
--- a/building/sunos32x86/squeak.stack.spur/build/mvm
+++ b/building/sunos32x86/squeak.stack.spur/build/mvm
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 set -e
-case "`uname -m`" in # ensure we see x86 as machine type
+set -o pipefail
+case "$(uname -m)" in # ensure we see x86 as machine type
 i86pc) ;; # we're good
-*) if type i386 2>&1 >/dev/null; then
+*) if type i386 >/dev/null 2>&1; then
 	echo "Re-exec as x86"
 	exec i386 "$0" "$@"
 fi ;;
@@ -21,11 +22,12 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && $MAKE reallyclean
 esac
+# this logic is broken || and && are not ternary operators
 test -f plugins.int || (test -f ../plugins.int && cp -p ../plugins.int . || cp -p ../../plugins.int .)
 test -f plugins.ext || (test -f ../plugins.ext && cp -p ../plugins.ext . || cp -p ../../plugins.ext .)
 test -f config.h || ../../../../platforms/unix/config/configure \
@@ -41,7 +43,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS="$LIBS" \
 	CFLAGS="$OPT"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer $MAKE install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-$MAKE install-squeak install-doc install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG
+$MAKE install-squeak install-doc install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/sunos64x64/squeak.cog.spur/build/mvm b/building/sunos64x64/squeak.cog.spur/build/mvm
index aafb408c55..099af6fd2e 100755
--- a/building/sunos64x64/squeak.cog.spur/build/mvm
+++ b/building/sunos64x64/squeak.cog.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqcogspur64sunosht/usr
 # Some gcc versions create a broken VM using -O2
@@ -16,11 +17,12 @@ fi
 
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			test -f Makefile && $MAKE reallyclean
 esac
+# this logic is broken || and && are not ternary operators
 test -f plugins.int || (test -f ../plugins.int && cp -p ../plugins.int . || cp -p ../../plugins.int .)
 test -f plugins.ext || (test -f ../plugins.ext && cp -p ../plugins.ext . || cp -p ../../plugins.ext .)
 test -f config.h || ../../../../platforms/unix/config/configure --without-npsqueak \
@@ -36,7 +38,7 @@ test -f config.h || ../../../../platforms/unix/config/configure --without-npsque
 	LIBS="$LIBS" \
 	LDFLAGS="$LDFLAGS"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer $MAKE install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-$MAKE install-squeak install-doc install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG
+$MAKE install-squeak install-doc install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/sunos64x64/squeak.stack.spur/build/mvm b/building/sunos64x64/squeak.stack.spur/build/mvm
index 50a42a5070..e34a0f9de0 100755
--- a/building/sunos64x64/squeak.stack.spur/build/mvm
+++ b/building/sunos64x64/squeak.stack.spur/build/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # Stack Spur VM with VM profiler and threaded heartbeat
 INSTALLDIR=sqstkspur64sunosht/usr
 # Some gcc versions create a broken VM using -O2
@@ -12,11 +13,12 @@ if [ $# -ge 1 ]; then
 fi
 if ../../../../scripts/checkSCCSversion ; then exit 1; fi
 echo -n "clean? "
-read a
+read -r a
 case $a in
 n|no|N|NO)	echo "ok but this isn't safe!!";;
 *)			rm -f config.h; test -f Makefile && $MAKE reallyclean
 esac
+# this logic is broken || and && are not ternary operators
 test -f plugins.int || (test -f ../plugins.int && cp -p ../plugins.int . || cp -p ../../plugins.int .)
 test -f plugins.ext || (test -f ../plugins.ext && cp -p ../plugins.ext . || cp -p ../../plugins.ext .)
 test -f config.h || ../../../../platforms/unix/config/configure \
@@ -32,7 +34,7 @@ test -f config.h || ../../../../platforms/unix/config/configure \
 	LIBS="$LIBS" \
 	CFLAGS="$OPT"
 rm -f vm/sqUnixMain.o # nuke version info
-rm -rf ../../../../products/$INSTALLDIR
+rm -rf "../../../../products/$INSTALLDIR"
 # prefer $MAKE install prefix=`readlink -f \`pwd\`/../../../../products/$INSTALLDIR`
 # but older linux readlinks lack the -f flag
-$MAKE install-squeak install-doc install-plugins prefix=`(cd ../../../../;pwd)`/products/$INSTALLDIR 2>&1 | tee LOG
+$MAKE install-squeak install-doc install-plugins prefix="$(cd ../../../../;pwd)/products/$INSTALLDIR" 2>&1 | tee LOG
diff --git a/building/win32x86/squeak.cog.spur.lowcode/mvm b/building/win32x86/squeak.cog.spur.lowcode/mvm
index 55d88db096..8dfac4ff92 100755
--- a/building/win32x86/squeak.cog.spur.lowcode/mvm
+++ b/building/win32x86/squeak.cog.spur.lowcode/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -10,7 +11,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -18,18 +19,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+    shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win32x86/squeak.cog.spur/mvm b/building/win32x86/squeak.cog.spur/mvm
index 0800b5acbc..a5695f4a29 100755
--- a/building/win32x86/squeak.cog.spur/mvm
+++ b/building/win32x86/squeak.cog.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -8,12 +9,12 @@ else
 	while getopts 'ASTadf?' opt "$@"; do
 		case $opt in
 		A)	A=1;D=1;F=1;;
-		S)	echo -S not yet implemented\; use -A for now 1>&1; exit 1;;
+		S)	echo "-S not yet implemented; use -A for now"; exit 1;;
 		T)	T=1;;
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,33 +22,33 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1` # drop options, pass other args to make
+	shift $(( OPTIND - 1 )) # drop options, pass other args to make
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then # single-threaded VM
 	if [ -n "$D" ]; then
 		rm -rf builddbg/vm/*.exe
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
 		rm -rf buildast/vm/*.exe
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
 		rm -rf build/vm/*.exe
-		make $@ product 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" product 2>&1 | tee LOGF
 	fi
 else # multi-threaded VM
 	if [ -n "$D" ]; then
 		rm -rf buildmtdbg/vm/*.exe
-		make $@ debugmt 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debugmt 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
 		rm -rf buildmtast/vm/*.exe
-		make $@ assertmt 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assertmt 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
 		rm -rf buildmt/vm/*.exe
-		make $@ productmt 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" productmt 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/win32x86/squeak.cog.v3/mvm b/building/win32x86/squeak.cog.v3/mvm
index 55d88db096..a61acd0962 100755
--- a/building/win32x86/squeak.cog.v3/mvm
+++ b/building/win32x86/squeak.cog.v3/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -10,7 +11,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -18,18 +19,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win32x86/squeak.sista.spur/mvm b/building/win32x86/squeak.sista.spur/mvm
index 55d88db096..a61acd0962 100755
--- a/building/win32x86/squeak.sista.spur/mvm
+++ b/building/win32x86/squeak.sista.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -10,7 +11,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -18,18 +19,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win32x86/squeak.stack.spur/mvm b/building/win32x86/squeak.stack.spur/mvm
index 55d88db096..a61acd0962 100755
--- a/building/win32x86/squeak.stack.spur/mvm
+++ b/building/win32x86/squeak.stack.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -10,7 +11,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -18,18 +19,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win32x86/squeak.stack.v3/mvm b/building/win32x86/squeak.stack.v3/mvm
index 55d88db096..a61acd0962 100755
--- a/building/win32x86/squeak.stack.v3/mvm
+++ b/building/win32x86/squeak.stack.v3/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -10,7 +11,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -18,18 +19,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win64ARMv8/squeak.cog.spur/mvm b/building/win64ARMv8/squeak.cog.spur/mvm
index 0800b5acbc..5ec7b260f5 100755
--- a/building/win64ARMv8/squeak.cog.spur/mvm
+++ b/building/win64ARMv8/squeak.cog.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -13,7 +14,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,33 +22,33 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1` # drop options, pass other args to make
+    shift $(( OPTIND - 1 )) # drop options, pass other args to make
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then # single-threaded VM
 	if [ -n "$D" ]; then
 		rm -rf builddbg/vm/*.exe
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
 		rm -rf buildast/vm/*.exe
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
 		rm -rf build/vm/*.exe
-		make $@ product 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" product 2>&1 | tee LOGF
 	fi
 else # multi-threaded VM
 	if [ -n "$D" ]; then
 		rm -rf buildmtdbg/vm/*.exe
-		make $@ debugmt 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debugmt 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
 		rm -rf buildmtast/vm/*.exe
-		make $@ assertmt 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assertmt 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
 		rm -rf buildmt/vm/*.exe
-		make $@ productmt 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" productmt 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/win64ARMv8/squeak.sista.spur/mvm b/building/win64ARMv8/squeak.sista.spur/mvm
index 55d88db096..8dfac4ff92 100644
--- a/building/win64ARMv8/squeak.sista.spur/mvm
+++ b/building/win64ARMv8/squeak.sista.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -10,7 +11,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -18,18 +19,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+    shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win64ARMv8/squeak.stack.spur/mvm b/building/win64ARMv8/squeak.stack.spur/mvm
index 104047e08f..58fc42ab3b 100755
--- a/building/win64ARMv8/squeak.stack.spur/mvm
+++ b/building/win64ARMv8/squeak.stack.spur/mvm
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -9,7 +9,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -17,18 +17,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win64x64/squeak.cog.spur/mvm b/building/win64x64/squeak.cog.spur/mvm
index 0800b5acbc..d169857f86 100755
--- a/building/win64x64/squeak.cog.spur/mvm
+++ b/building/win64x64/squeak.cog.spur/mvm
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e
+set -o pipefail
 # A=all(a,d,f) T=Threaded a=assert d=debug f=fast
 A=;D=;F=;T=
 if [ $# = 0 ]; then
@@ -13,7 +14,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -21,33 +22,33 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1` # drop options, pass other args to make
+	shift $(( OPTIND - 1 )) # drop options, pass other args to make
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -z "$T" ]; then # single-threaded VM
 	if [ -n "$D" ]; then
 		rm -rf builddbg/vm/*.exe
-		make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debug 2>&1 | tee LOGD
 	fi
 	if [ -n "$A" ]; then
 		rm -rf buildast/vm/*.exe
-		make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assert 2>&1 | tee LOGA
 	fi
 	if [ -n "$F" ]; then
 		rm -rf build/vm/*.exe
-		make $@ product 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" product 2>&1 | tee LOGF
 	fi
 else # multi-threaded VM
 	if [ -n "$D" ]; then
 		rm -rf buildmtdbg/vm/*.exe
-		make $@ debugmt 2>&1 | tee LOGTD ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" debugmt 2>&1 | tee LOGTD
 	fi
 	if [ -n "$A" ]; then
 		rm -rf buildmtast/vm/*.exe
-		make $@ assertmt 2>&1 | tee LOGTA ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" assertmt 2>&1 | tee LOGTA
 	fi
 	if [ -n "$F" ]; then
 		rm -rf buildmt/vm/*.exe
-		make $@ productmt 2>&1 | tee LOGTF ; test ${PIPESTATUS[0]} -eq 0
+		make "$@" productmt 2>&1 | tee LOGTF
 	fi
 fi
diff --git a/building/win64x64/squeak.sista.spur/mvm b/building/win64x64/squeak.sista.spur/mvm
index 55d88db096..4bf4a66c30 100644
--- a/building/win64x64/squeak.sista.spur/mvm
+++ b/building/win64x64/squeak.sista.spur/mvm
@@ -10,7 +10,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -18,18 +18,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/building/win64x64/squeak.stack.spur/mvm b/building/win64x64/squeak.stack.spur/mvm
index 104047e08f..a61acd0962 100755
--- a/building/win64x64/squeak.stack.spur/mvm
+++ b/building/win64x64/squeak.stack.spur/mvm
@@ -1,4 +1,6 @@
-#!/bin/bash
+#!/usr/bin/env bash
+set -e
+set -o pipefail
 A=;D=;F=
 if [ $# = 0 ]; then
 	A=1;D=1;F=1
@@ -9,7 +11,7 @@ else
 		a)	A=1;;
 		d)	D=1;;
 		f)	F=1;;
-		*)	echo usage $0 [-A] [-a\ [-d] [-f]; exit 0;;
+		*)	echo "usage $0 [-A] [-a] [-d] [-f]"; exit 0;;
 		esac
 	done
 	if [ "$1" = -- ]; then
@@ -17,18 +19,18 @@ else
 			A=1;D=1;F=1
 		fi
 	fi
-	shift `expr $OPTIND - 1`
+	shift $(( OPTIND - 1 ))
 fi
 if ../../../scripts/checkSCCSversion ; then exit 1; fi
 if [ -n "$D" ]; then
 	rm -rf builddbg/vm/*.exe
-	make $@ debug 2>&1 | tee LOGD ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" debug 2>&1 | tee LOGD
 fi
 if [ -n "$A" ]; then
 	rm -rf buildast/vm/*.exe
-	make $@ assert 2>&1 | tee LOGA ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" assert 2>&1 | tee LOGA
 fi
 if [ -n "$F" ]; then
 	rm -rf build/vm/*.exe
-	make $@ 2>&1 | tee LOGF ; test ${PIPESTATUS[0]} -eq 0
+	make "$@" 2>&1 | tee LOGF
 fi
diff --git a/image/envvars.sh b/image/envvars.sh
old mode 100755
new mode 100644
index 60f854c5c9..33eefa4d0f
--- a/image/envvars.sh
+++ b/image/envvars.sh
@@ -7,34 +7,47 @@ BASESISTA64=trunk6-sista-64
 
 # N.B. uname -r (OSREL) is not to be trusted on Mac OS X;
 
-if test -x /usr/bin/uname; then
-	OS=`/usr/bin/uname -s`
-	CPU=`/usr/bin/uname -m`
-	OSREL=`/usr/bin/uname -r | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*$/\1.\2.\3/'`
-elif test -x /bin/uname; then
-	OS=`/bin/uname -s`
-	CPU=`/bin/uname -m`
-	OSREL=`/bin/uname -r | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*$/\1.\2.\3/'`
+if test -x uname; then
+	OS=$(uname -s)
+	CPU=$(uname -m)
+	OSREL=$(uname -r | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*$/\1.\2.\3/')
+elif test -x uname; then
+	OS=$(uname -s)
+	CPU=$(uname -m)
+	OSREL=$(uname -r | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*$/\1.\2.\3/')
 else
-	OS=`uname -s`
-	CPU=`uname -m`
-	OSREL=`uname -r | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*$/\1.\2.\3/'`
+	OS=$(uname -s)
+	CPU=$(uname -m)
+	OSREL=$(uname -r | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*$/\1.\2.\3/')
 fi
 
-test "$OS" = Darwin && function quietmd5 { /sbin/md5 -q "$1" 2>/dev/null; }
-test "$OS" = Darwin || function quietmd5 { /usr/bin/md5sum "$1" | sed 's/ .*$//' 2>/dev/null; }
+function quietmd5() {
+  if command -v md5 >/dev/null 2>&1; then
+    # macOS / BSD
+    md5 -q "$1" 2>/dev/null
+  elif command -v md5sum >/dev/null 2>&1; then
+    # Linux / BusyBox
+    md5sum "$1" 2>/dev/null | cut -d ' ' -f 1
+  else
+    echo "quietmd5: neither md5 nor md5sum found in PATH" >&2
+    return 1
+  fi
+}
 
-test "$OS" = Darwin && function geturl { FILE=`basename "$1"`; curl -C - "`echo $1 | sed 's/ /%20/g'`" -o "$FILE"; }
-test "$OS" = Darwin || function geturl { wget -c "$1"; }
+function geturl() {
+  local url="$1"
 
-if [ "$OS" != Darwin -a ! -x "`which wget`" ]; then
-	echo "cannot find wget. wget for Windows is available from http://gnuwin32.sourceforge.net/packages/wget.htm, probably as http://downloads.sourceforge.net/gnuwin32/wget-1.11.4-1-setup.exe" 1>&2
-	exit
-fi
+  if command -v curl >/dev/null 2>&1; then
+    curl -C - -O "$url"
+  elif command -v wget >/dev/null 2>&1; then
+    wget -c "$url"
+  else
+    echo "geturl: neither curl nor wget found in PATH" >&2
+    return 1
+  fi
+}
 
-if unzip --help >/dev/null; then
-	true
-else
+if ! command -v unzip >/dev/null 2>&1; then
 	echo 'could not find unzip.  you can find instructions on how to install it on google.' 1>&2;
 	exit 1
 fi
diff --git a/image/getGoodSpur64VM.sh b/image/getGoodSpur64VM.sh
index a7fcc32874..7b96ff3799 100755
--- a/image/getGoodSpur64VM.sh
+++ b/image/getGoodSpur64VM.sh
@@ -11,7 +11,7 @@ LATEST_RELEASE_URL="$RELEASES_URL/latest"
 
 for foo in once; do # allow break to jump to end of script
 
-if [ "$1" = -vm -a -n "$2" -a -x "`which "$2"`" ]; then
+if [ "$1" = -vm -a -n "$2" -a -x "$(which "$2")" ]; then
 	VM="$2"
 	shift;shift
 else
@@ -74,7 +74,7 @@ else
 	Darwin) 
 		if open $LATESTVM; then
 			while [ ! -d "/Volumes/$VOLUME/$VMDIR" ]; do sleep 1; done
-			rm -rf $VMDIR
+			rm -rf "$VMDIR"
 			cp -Rp "/Volumes/$VOLUME/$VMDIR" $VMDIR
 			diskutil eject "/Volumes/$VOLUME"
 		fi;;
diff --git a/image/getGoodSpurVM.sh b/image/getGoodSpurVM.sh
index dcc4597622..499d37b845 100755
--- a/image/getGoodSpurVM.sh
+++ b/image/getGoodSpurVM.sh
@@ -35,7 +35,7 @@ else
 			curl -L "$URL" -o "$LATESTVM"
 			open $LATESTVM
 			while [ ! -d "/Volumes/$VOLUME/Squeak.app" ]; do sleep 1; done
-			rm -rf $VM
+			rm -rf "$VM"
 			cp -Rp "/Volumes/$VOLUME/Squeak.app" $VM
 			diskutil eject "/Volumes/$VOLUME"
 		fi
@@ -83,7 +83,7 @@ else
 			echo curl -L "$URL" -o "$LATESTVM"
 			curl -L "$URL" -o "$LATESTVM"
 			unzip $LATESTVM -d sqwin.$LATESTRELEASE
-			rm -f $LATESTVM
+			rm -f "$LATESTVM"
 		fi
 		VM=sqwin.$LATESTRELEASE/SqueakConsole.exe;;
 	*)	echo "do not know how to download a VM for your system" 1>&2
diff --git a/image/getsqueak50.sh b/image/getsqueak50.sh
index d63064aad1..53309bbd46 100755
--- a/image/getsqueak50.sh
+++ b/image/getsqueak50.sh
@@ -5,9 +5,9 @@ set -e
 IMAGEHASH=e6be0ea204a8409dc0976a792502ab65
 ZIPHASH=2f17e1d8eb9bec2b7554d3405652b122
 
-if [ "`quietmd5 \"$SQUEAK50\".image`" != $IMAGEHASH ]; then
+if [ "$(quietmd5 "$SQUEAK50".image)" != $IMAGEHASH ]; then
 	ZIP=Squeak-5.0-All-in-One.zip
-	if [ "`quietmd5 $ZIP`" != $ZIPHASH ]
+    if [ "$(quietmd5 $ZIP)" != $ZIPHASH ]
 	then
 		geturl http://files.squeak.org/5.0/$ZIP
 	fi
@@ -21,4 +21,4 @@ if [ "`quietmd5 \"$SQUEAK50\".image`" != $IMAGEHASH ]; then
 	unzip $ZIP
 	rm -rf __MACOSX
 fi
-test -f SqueakV50.sources || ln $SQUEAK50RESOURCES/SqueakV50.sources .
+test -f SqueakV50.sources || ln "$SQUEAK50RESOURCES/SqueakV50.sources" .
diff --git a/platforms/unix/config/mkmf b/platforms/unix/config/mkmf
index 3490f02d7c..d2c169cf70 100755
--- a/platforms/unix/config/mkmf
+++ b/platforms/unix/config/mkmf
@@ -1,23 +1,23 @@
 #!/bin/sh
 
 # mkmf -- configure subdirectory Makefiles			-*- sh -*-
-# 
+#
 #   Copyright (C) 1996-2004 by Ian Piumarta and other authors/contributors
 #                              listed elsewhere in this file.
 #   All rights reserved.
-#   
+#
 #   This file is part of Unix Squeak.
-# 
+#
 #   Permission is hereby granted, free of charge, to any person obtaining a copy
 #   of this software and associated documentation files (the "Software"), to deal
 #   in the Software without restriction, including without limitation the rights
 #   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 #   copies of the Software, and to permit persons to whom the Software is
 #   furnished to do so, subject to the following conditions:
-# 
+#
 #   The above copyright notice and this permission notice shall be included in
 #   all copies or substantial portions of the Software.
-# 
+#
 #   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 #   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 #   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -25,9 +25,9 @@
 #   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 #   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 #   SOFTWARE.
-# 
+#
 # Author: ian.piumarta@inria.fr
-# 
+#
 # Last edited: Thu Jan 21 14:10:49 PST 2010 by eliot (add support for .cpp)
 
 . ./config.sh
@@ -46,7 +46,7 @@ findDirs() {
   shift
   dirs=""
   while test $# -gt 0; do
-    dirs="${dirs} ${prefix}`dirname $1`"
+    dirs="${dirs} ${prefix}$(dirname "$1")"
     shift
   done
   echo ${dirs} | tr ' ' '\012' | sort | uniq | tr '\012' ' '
@@ -82,16 +82,16 @@ mkmf() {
     if test -d ${d}; then
       dd=${d}
       if test -f ${d}/mkmf.subdirs; then
-        subdirs="`cat ${d}/mkmf.subdirs | tr '\012' ' '`"
+        subdirs="$(cat ${d}/mkmf.subdirs | tr '\012' ' ')"
         for sd in ${subdirs}; do dd="${dd} ${topdir}/${sd}"; done
       fi
-      srcs="${srcs} `findFiles .c ${dd}`"
-      srcs="${srcs} `findFiles .cc ${dd}`"
-      srcs="${srcs} `findFiles .cpp ${dd}`"
-      srcs="${srcs} `findFiles .S ${dd}`"
-      srcs="${srcs} `findFiles .s ${dd}`"
-      srcs="${srcs} `findFiles .m ${dd}`"
-      hdrs="${hdrs} `findFiles .h ${dd}`"
+      srcs="${srcs} $(findFiles .c ${dd})"
+      srcs="${srcs} $(findFiles .cc ${dd})"
+      srcs="${srcs} $(findFiles .cpp ${dd})"
+      srcs="${srcs} $(findFiles .S ${dd})"
+      srcs="${srcs} $(findFiles .s ${dd})"
+      srcs="${srcs} $(findFiles .m ${dd})"
+      hdrs="${hdrs} $(findFiles .h ${dd})"
       # override Makefile.in
       if test -f "${d}/Makefile.in"; then
         makefile_in="${d}/Makefile.in"
@@ -103,8 +103,8 @@ mkmf() {
       test -f "${d}/Targets.exclude" && cat "${d}/Targets.exclude" >>${excluded}
     fi
   done
-  srcs="`echo ${srcs} | tr ' ' '\012' | fgrep -v '*'`"
-  hdrs="`echo ${hdrs} | tr ' ' '\012' | fgrep -v '*'`"
+  srcs="$(echo ${srcs} | tr ' ' '\012' | fgrep -v '*')"
+  hdrs="$(echo ${hdrs} | tr ' ' '\012' | fgrep -v '*')"
   # create targets and rules
   if test "${srcs}" != ""; then
     # objs is used to make the list of targets unique so that a platform can
@@ -114,7 +114,7 @@ mkmf() {
     # in the platform plugin dir)
     echo "" > ${objs}
     for c in ${srcs}; do
-      o=`basename ${c} | sed 's,\.cp*,$o,;s,\.[msS],$o,'`
+      o=$(basename ${c} | sed 's,\.cp*,$o,;s,\.[msS],$o,')
       grep -qs "^$o$" ${excluded} || grep -qs "^$o$" ${objs} || targets="${targets} ${o}"
       echo "$o" >>${objs}
       echo												>> ${make_targets}
@@ -130,7 +130,7 @@ mkmf() {
   fi
   # create includes
   if test "${hdrs}" != ""; then
-    includes="${includes} `findDirs -I ${hdrs}`"
+    includes="${includes} $(findDirs -I ${hdrs})"
   fi
   # default Makefile.in if no override
   if test ! -f "${makefile_in}"; then
@@ -167,7 +167,7 @@ s%\[make_plg\]%%g
 s%\[plibs\]%${plibs}%g
 /\[make_targets\]/r ${make_targets}
 s%\[make_targets\]%%g" > ${name}/Makefile
-  /bin/rm -f ${make_targets} makefile.in makefile.sub
+  rm -f ${make_targets} makefile.in makefile.sub
 }
 
 plibs=""
@@ -181,7 +181,7 @@ plibs=""
 if test "${ext_modules}" != ""; then
   for p in ${ext_modules}; do
     if test -f ${p}.lib; then
-      plibs="`cat ${p}.lib`"
+      plibs="$(cat ${p}.lib)"
     else
       plibs=""
     fi
@@ -200,7 +200,7 @@ plibs=""
 if test "${ext_plugins}" != ""; then
   for p in ${ext_plugins}; do
     if test -f ${p}.lib; then
-      plibs="`cat ${p}.lib`"
+      plibs="$(cat ${p}.lib)"
     else
       plibs=""
     fi
diff --git a/platforms/unix/config/squeak.sh.in b/platforms/unix/config/squeak.sh.in
index 9865e2d0ef..9eb1e06d6e 100644
--- a/platforms/unix/config/squeak.sh.in
+++ b/platforms/unix/config/squeak.sh.in
@@ -1,7 +1,7 @@
-#!/bin/sh
+#!/usr/bin/env bash
 # Run the VM, setting SQUEAK_PLUGINS if unset to the VM's containing directory
 # if unset, and ensuring LD_LIBRARY_PATH includes the VM's containing directory.
-BIN=`/usr/bin/dirname "$0"`/@expanded_relative_imgdir@
+BIN=$(dirname "$0")/@expanded_relative_imgdir@
 GDB=
 if [ "${SQUEAK_PLUGINS-unset}" = unset ]; then
 	export SQUEAK_PLUGINS="$BIN"
@@ -15,7 +15,7 @@ fi
 # At least on linux LD_LIBRARY_PATH's components must be absolute path names
 case "$BIN" in
 /*) PLUGINS="$BIN";;
-*) PLUGINS="`pwd`/$BIN"
+*) PLUGINS="$(pwd)/$BIN"
 esac
 
 if [ $(uname -s) = "OpenBSD" ]; then
@@ -26,8 +26,8 @@ fi
 # libc (e.g. through the FFI) then it must use the same version that the VM uses
 # and so it should take precedence over /lib libc.  This is done by setting
 # LD_LIBRARY_PATH appropriately, based on ldd's idea of the libc use by the VM.
-LIBC_SO="`/usr/bin/ldd "$BIN/squeak" | /bin/fgrep /libc. | sed 's/^.*=> \([^ ]*\).*/\1/'`"
-PLATFORMLIBDIR=`expr "$LIBC_SO" : '\(.*\)/libc.*'`
+LIBC_SO="$(ldd "$BIN/squeak" | fgrep /libc. | sed 's/^.*=> \([^ ]*\).*/\1/')"
+PLATFORMLIBDIR=$(expr "$LIBC_SO" : '\(.*\)/libc.*')
 
 if [ "$PLATFORMLIBDIR" = "" ]; then
 {
@@ -37,7 +37,7 @@ if [ "$PLATFORMLIBDIR" = "" ]; then
 	echo "  LIBC_SO="$LIBC_SO
 	cat /etc/*-release*  |  grep -v // | sed 's/^/  /' 
 	echo -n "  UNAME=" ; uname -a
-	MACHINE=`uname -m`
+	MACHINE=$(uname -m)
 	case "$MACHINE" in
 		*64*)
 			echo "  System seems to be 64 bit. You may need to (re)install the 32-bit libraries."