This is valid when there is no quoted fields with embeded commas:

while (<INPUT>) {
  chomp;
  my ($pref,$data) = (/^((?:[^,]*,){3})(.*)/);
  print OUTPUT "$pref$_\n" for split /,/, $data;
}

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In reply to Re: Generating an output file by vitoco
in thread Generating an output file by TStanley

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