perl exit code

Hi - When the perl code is ran successfully I will get a return code as 0
but how can I set the perl exit code based on if condition.
What i am trying to achieve is
I wrote this below perl code to compare two dates and if $dt < $fileDate then I want to execute other perl scripts
or else i dont want to execute remaing scripts.
i found there are multiple ways that i can do this
1) write some number (say 100) to a output file if($dt < $fileDate) and read that output file and check the number if the number is 100 then i will run the remaining scripts
this process needs cretion of another file so i dont like it
2) generally if the script ran well it returns 0, so if the return code is 0 i will call other scripts
but how to fail the script if($dt > $fileDate)  I mean how to set the exit code if my condition is not met.

I want something that breaks the perl scripts if the condition is not met how can do that .

#!/usr/bin/perl

use 5.006;
use strict;
use warnings;
use Pod::Usage;
use Getopt::Long;
use Cwd;
use DateTime;
use DBD::mysql;
use Time::Piece;
use DBI;

my $helpme = 0;
my $man = 0;
my $fileName = 'C:\\temp\\test.txt';
my $fileDate = '';
my $dateformat = "%Y-%m-%d %H:%M:%S";
GetOptions('help' => \$helpme, 'man' => \$man, 'infile=s' => \$fileName) or pod2usage(2);

pod2usage(1) if $helpme;
pod2usage(-verbose => 2) if $man;

die "No input file name specified!" if !$fileName;

open(INFILE, "<", $fileName) || die "Could not open input file!";

my @where;
while (<INFILE>) {
    $fileDate = POSIX::strftime( "%Y-%m-%d %H:%M:%S", localtime( ( stat $fileName )[9]));
}
my $dt = "2015-03-18 23:28:28";
$dt = Time::Piece->strptime($dt, $dateformat);
$fileDate = Time::Piece->strptime($fileDate, $dateformat);

if($dt < $fileDate) {
    print "good" ;
}
else {
    print "not good" ;
}

close INFILE;
shragiAsked:
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FishMongerCommented:
Use the exit function and pass the desired value as its arg.
perldoc -f exit

If the script needs to do additional processing after the if/else block, then set a var to the desired exit value and issue the exit call at a later point.
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shragiAuthor Commented:
thanks FishMonger :)
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