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scw-metadata: add --help #188

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scw-metadata: add --help #188

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12 changes: 12 additions & 0 deletions skeleton-common/usr/local/bin/scw-metadata
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,18 @@ CACHE_FILE=/run/scw-metadata.cache
METADATA_IP=${METADATA_IP:-169.254.42.42}
METADATA_URL=${METADATA_URL:-"http://${METADATA_IP}/conf"}

if [ "$1" = -h ] || [ "$1" = --help ]; then
cat <<EOF
Usage: $0 [--cached] [KEY]
Retrieves metadata about this server (All available metadata by default).
--cached Use the previously fetched metadata if available.

$0 outputs the value of the key if given, or a newline separated list of KEY=value couples otherwise.
The value might be an empty string.
EOF
exit 0
fi

if [ "$1" = "--cached" -a -f $CACHE_FILE ]; then
shift
BODY=$(cat $CACHE_FILE)
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