1424621700, 2015-02-22 16:15:00, 4294.700
1424621760, 2015-02-22 16:16:00, 4289.700
1424621820, 2015-02-22 16:17:00, 4299.800
1424621880, 2015-02-22 16:18:00, 4302.800
1424621940, 2015-02-22 16:19:00, 4296.900
1424622000, 2015-02-22 16:20:00, 4301.000
1424622060, 2015-02-22 16:21:00, 4300.300

##</code><code>##

#!/usr/bin/perl

use strict;
use warnings;

my $file = $ARGV[0];

open (RAW, "./$file") or die "Can't open $file for read: $!";
open (OUT, ">./OUTPUT_$file") or die "Can't open Output_$file: $!";

while(<RAW>) {

        my $line = $_;
        chop($line);
        next if ($line =~ /!/);
        my @splits = split (',', $line);

        my $first_value = @splits[0];

print "$first_value\n";
}