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30 lines
406 B
Plaintext
30 lines
406 B
Plaintext
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#!/bin/bash
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# wrapper for 'sed -i': fail if file was not modified by sed
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set -ueo pipefail
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HASHTOOL="sha1sum"
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if [[ $# -lt 1 ]]
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then
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echo "Error: No file given."
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echo
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exit 1
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fi >&2
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# get last argument
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FILE=${*: -1}
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OLD=$(${HASHTOOL} "${FILE}")
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sed "$@"
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NEW=$(${HASHTOOL} "${FILE}")
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# fail if file was not modified
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if [[ ${OLD} == "${NEW}" ]]
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then
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echo "Error: sed $*"
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exit 1
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fi >&2
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exit 0
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