#!/usr/bin/perl

use warnings;
use strict;

$ARGV[0] ||= '';

if ($ARGV[0] eq 'TEST') {
    print "$ARGV[0]\n";
}

##</code><code>##

#!/usr/bin/perl

use warnings;
use strict;

if (defined($ARGV[0]) && $ARGV[0] eq 'TEST') {
    print "$ARGV[0]\n";
}