For parsing and writing CSV, Text::CSV is your friend. And for datetime manipulations, you want DateTime.

use Text::CSV;
use DateTime;
use constant DATE_FORMAT => '%a %b %d %Y %T';

my $in_fh  = \*DATA;
my $out_fh = \*STDOUT;

my $csv = Text::CSV->new({ allow_whitespace => 1 });
while (my $row = $csv->getline($in_fh))
{
    for my $col (0, 1)
    {
        my $dt = DateTime->from_epoch(
            epoch     => $row->[$col],
            time_zone => '-05:00',
        );
        $row->[$col] = $dt->strftime(DATE_FORMAT);
    }
    
    $csv->print($out_fh, $row);
    print {$out_fh} "\n";
}

__DATA__
1345752662, 1345752673, CLOSED, CRITICAL, Other fields etc

[download]
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re: Epoch time conversion in CSV by tobyink
in thread Epoch time conversion in CSV by theneil

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