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https://github.com/linuxkit/linuxkit.git
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68 lines
1.3 KiB
Bash
Executable File
68 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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set -e
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##
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#
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# script to replace hashes in config files
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# see usage() for usage and functionality
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#
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usage() {
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cat >&2 <<EOF
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$0 --<mode> <how-to-find> <new-hash>
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Available modes: --hash and --image
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Replace by hash:
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$0 --hash <OLD> <NEW>
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Example: $0 8675309abcdefg abcdef567899
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Will replace all instances of 8675309abcdefg with abcdef567899
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Replace by image: $0 --image <IMAGE> <NEW>
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$0 --image <IMAGE> <NEW>
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Example: $0 linuxkit/foo abcdef567899
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Will tag all instances of linuxkit/foo with abcdef567899
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By default, for convenience, if no mode is given (--image or --hash), the first method (--hash) is assumed.
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Thus the following are equivalent:
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$0 <OLD> <NEW>
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$0 --hash <OLD> <NEW>
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EOF
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}
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# backwards compatibility
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if [ $# -eq 2 ]; then
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set -- "--hash" "$1" "$2"
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fi
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# sufficient arguments
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if [ $# -ne 3 ] ; then
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usage
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exit 1
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fi
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# which mode?
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case "$1" in
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--hash)
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old=$2
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new=$3
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git grep -w -l "\b$old\b" | xargs sed -i.bak -e "s,$old,$new,g"
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;;
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--image)
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image=$2
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hash=$3
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git grep -E -l "\b$image:" | xargs sed -i.bak -e "s,$image:[[:xdigit:]]"'\{40\}'",$image:$hash,g"
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;;
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*)
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echo "Unknown mode $1"
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usage
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exit 1
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;;
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esac
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find . -name '*.bak' | xargs rm
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