#!/bin/sh
#	program:	domsort
#	release:	1.5.0
#	purpose:	Filter that sorts domain names by upper-level domain
#			first, next inner domain name next, and so on.
#	input:		FQDN domain names, one per line on stdin.
#	output:		The same domain names, sorted by domain hierarchy.
#	exit value:	0 if succeeds, 1 if usage wrong,
#			or whatever value the awk|sort|sed pipeline returns.
#
# Copyright (C) 1993-2000 Paul A. Balyoz <pab@domtools.com>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

usage() {
	echo "usage: $0 [-u]" >&2
	exit 1
}

if test $# -gt 1; then
	usage
fi

u=''
for arg do
	case $arg in
		-u)	u='u' ;;
		*)	usage ;;
	esac
done

awk -f /usr/local/domtools/lib/domsort.awk | sort -fi$u | sed -e 's/^[^ ]* //'

exit $?
