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19 lines
314 B
19 lines
314 B
#!/bin/bash
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function usage {
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builtin echo "Usage: $(basename "$0") <REGEX> <STRING> <FILE>"
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}
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[[ $# -ne 3 ]] && usage && exit 2
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REGEX=$1
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STRING=$2
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FILE=$3
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if ! grep -Pq "$REGEX" "$FILE"; then
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builtin echo -e "$STRING" >>"$FILE"
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echo 'appended'
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else
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sed -Ei "s|$REGEX|$STRING|g" "$FILE"
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echo 'replaced'
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fi
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