#!/usr/bin/perl -w
#
# Copyright (C) 2008, Joshua D. Abraham (jabra@spl0it.org)
#
# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
# use strict;
#
#
# union.pl - find the union of two files
#
use strict;
use List::Compare;
my (@file1, @file2);
if (defined($ARGV[0]) and -r $ARGV[0] and defined($ARGV[1]) and -r $ARGV[1]) {
    open(FIRST,$ARGV[0]) or die "Can't open first file\n";
    @file1 = <FIRST>;
    close(FIRST);
    
    open(SECOND,$ARGV[1]) or die "Can't open second file\n";
    @file2 = <SECOND>;
    close(SECOND);
    my $lc = List::Compare->new(\@file1, \@file2);

    my @union = $lc->get_union;
    print @union;
}
else {
    print "Usage: $0 [file1] [file2]\n";
}