#!/bin/sh
#
#ident        "@(#)i.kwarnd 1.2     98/08/19 SMI"
#
# Copyright (c) 1997, by Sun Microsystems, Inc.
# All rights reserved.
#

PATH="/usr/bin:/usr/sbin:${PATH}"
export PATH

trap "rm -f /tmp/$$;exit" 0 1 2 3 13 15

while read src dest
do
	if [ ! -f $dest ] ; then
		touch $dest
	fi
	# find each line in the existing file whose
	# first field does not exist in the new file
	rm -f /tmp/$$
	cat $src |
       (while read e1 e2
	do
		# skip comments
		if [ `expr "$e1" : '^[ 	]*#'` = 1 ] ; then
			continue;
		fi
		grep -w "$e1" $dest >/dev/null 2>&1
		if [ $? = 0 ] ; then
			continue
		else
			echo "$e1 $e2" >> /tmp/$$
		fi
	done)
	if [ -f /tmp/$$ ] ; then
		cat /tmp/$$ >> $dest
	fi
	rm -f /tmp/$$
done

exit 0