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#!/bin/sh
# Tag lines from files or stdin with a string prefix or suffix.
# Parse options out, give help if necessary
while getopts 'hp:s:' opt ; do
case $opt in
p)
pref=$OPTARG
;;
s)
suff=$OPTARG
;;
\?)
usage >&2
exit 2
;;
esac
done
shift "$((OPTIND-1))"
# Print each line as we read it, adding the tags
cat -- "${@:--}" |
while IFS= read -r line ; do
printf '%s%s%s\n' "$pref" "$line" "$suff"
done
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