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10 lines
148 B
Text
10 lines
148 B
Text
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# $FreeBSD$
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key='must contain this'
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PS4="$key+ "
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{ r=`set -x; { :; } 2>&1 >/dev/null`; } 2>/dev/null
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case $r in
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*"$key"*) true ;;
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*) false ;;
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esac
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