Hi Monks!
I am trying to group all the unique lines into a file based on the starting of the line as the account number, any better ay to do this? Here is a sample test of what I am trying.

#!/usr/bin/perl -w
use strict;
use warnings;

my %group;

foreach my $line (<DATA>) {
    
    $line=~/(^\d{2})(\.*?)/g;
    my $account = $1;
    
    if($account=~/$group{$line}/g) {
      open my $fH, ">", "$account.txt" or die "Can't open or create  '
+$account.txt'\n";
       print  $fH " $line \n";
     close $fH;
    }else{
      open my $fH, ">", "$account.txt" or die "Can't open or create  '
+$account.txt'\n";
       print  $fH " $line \n";
      close $fH
    }
    
    $group{$line}++;
    
}

__DATA__
01 The quick red fox and dog as test.
02 Time flies like an arrow, fruit flies like a banana.
02 Time flies like an arrow, fruit flies like a banana.
03 Now is the time for all good men to come to the aid of their party.
01 The quick red fox jumped over the lazy brown dog.
01 The quick red fox jumped over the lazy brown dog.
02 Time flies like an arrow.
03 Now is the time for all good men to come to the aid of their party 
+and not going.
03 Now is the time for all.

[download]

Thanks for the help!

In reply to Grouping unique lines into a file. by Anonymous Monk

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