2013-07-26 15:16:15 +02:00
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#!/bin/sh
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if [ $# -eq 0 ] || [ "$1" = "-h" ]; then
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cat <<EOF
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2013-10-23 12:37:56 +02:00
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Usage: ${0##*/} STRING [FILES]
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Prepend STRING to FILES or stdin if unspecified. STRING may not contain pipes
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('|').
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2013-07-26 15:16:15 +02:00
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EOF
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exit
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fi
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VAR="$1"
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shift
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2013-10-23 12:37:56 +02:00
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[ $# -eq 0 ] && OPT_INPLACE="" || OPT_INPLACE="-i"
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sed -n $OPT_INPLACE '1{s|^|'$VAR'\n|;h};1!H;${x;p}' "$@"
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