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24 lines
304 B
24 lines
304 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=$3
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grep -q "$REGEX" $FILE
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if [ $? -eq 1 ]; then
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echo "$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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