File match_printcap of Package yp-tools

#!/bin/sh
#
# Extracts printer information from the NIS printcap map, which must
# have been created with the create_printcap filter.
#
# Copyright (C) 1999  Massimo Dal Zotto <dz@cs.unitn.it>
# This file is distributed under the GNU General Public License version 2 

delim="_"		# delimiter used in nis map key
space=""		# space replacement in nis map key

case "$1" in
    -a|-all|--all)
	# Invoked interactively, dump the entire printer NIS map.
	# This is different than matching the key "all".
	ypcat printcap | sort | sed 's/.*[0-9]*|//' | uniq
	exit 0
	;;
    -*|"")
	# Called by lprng, read key from stdin
	read key
	;;
    *)
	# Invoked interactively, used only for testing
	key="$1"
	;;
esac
key="$(echo "$key" | sed "s/ /${space}/g")"

n=1
while ypmatch "${key}${delim}${n}" printcap 2>/dev/null; do
    n=$[$n + 1]
done \
| sed "s/^.*${delim}[0-9]*|//"