Hi Monks, I have a large comma separated file (220937474 characters) that does not have any line breaks. I thought breaking this file into lines of 80 characters would be an easy task for perl, 
 my $line = <IN>;

 my @probs = split ',', $line;
 
 $i=0;
 foreach (@probs) {
   ++$i;
   if ( $i % 80 != 0){ print OUT "$_"}
     else{  print OUT "\n"; }
 }

[download]
Firstly, it takes a while to do the split - is there a faster method or is that the best I can get out of perl. Secondly, it doesn't loop through the @prob array. Any ideas where Ive gone wrong? Thanks.

In reply to break up file with no line breaks by coldy

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