Made the following changes:

1. Closed your files when you were done with them.;
2. Declared your variables (required under strict and intensely recommended for a huge list of reasons)

#!/usr/bin/perl

use strict;

my %csga = ();

my $moyr="12/2014";
$,="\t";
open(IN,"<COS_SGA_xref.txt");
while(<IN>) {
     chop;
     @_ = split(/\t/);
     $csga{$_[0]}=$_[1];
}
close IN;

open(IN,"<cc.txt");
open(OUT,">new_cc.txt");
for(my $i=0;$i<9;$i++) {$_=<IN>;}
my ($mo,$yr)=@_ = split(/\//,$moyr);
while(<IN>) {
     chop;
     @_ = split(/\t/);
     my $created=pop(@_);
     my ($mocr,$day,$yrcr)=@_ = split(/\//,$created);
     if($yrcr.$mocr >= $yr.$mo) {
          my $cc=$_[1];
          $cc =~ y/C_//d;
          splice(@_,3,1);
          shift(@_);
          print OUT $created,@_,$csga{$cc};
          print OUT "\n";
     }
}
close IN;
close OUT;

__END__
[download]

And the results:

D:\PerlMonks>test2.pl

D:\PerlMonks>
[download]

It created an empty output file called new_cc.txt. I presume that's because I did not have the input file COS_SGA_xref.txt.

I'm afraid additional debugging will be all guesswork unless you can provide sample input data.

At a guess, however, your problem is one of two things:

1. Since you didn't close IN, your attempt to open it again failed.
   • If you would check for errors on open, you could catch such things.
2. You only write output if this statement is true: if($yrcr.$mocr >= $yr.$mo). Maybe it never is?
   • A print statement right before the if could reveal the issue.

---

In reply to Re^2: script assistance please by marinersk
in thread script assistance please by perlnobie

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