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plain) (
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# Tag lines from files or stdin with a string prefix or suffix
self=tl
# Parse options out
while getopts 'p:s:' opt ; do
case $opt in
# Prefix
p) pref=$OPTARG ;;
# Suffix
s) suff=$OPTARG ;;
# Unknown option
\?)
printf >&2 '%s: Unknown option %s\n' \
"$self" "$opt"
exit 2
;;
esac
done
shift "$((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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