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22 lines
296 B
22 lines
296 B
#!/bin/bash
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usage() {
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echo "Usage: $(basename "$0") <REGEX> <STRING> <FILE>"
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}
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if [[ $# -ne 3 ]]; then
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usage
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exit 2
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fi
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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" "$FILE"; then
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printf "%s\n" "$STRING" >>$FILE
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echo appended
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else
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sed -i "s|$REGEX|$STRING|g" $FILE
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echo replaced
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fi
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