#! /usr/bin/perl -w use strict; my $fileName = $ARGV[0]; my @old; my @new; open (my $file, "<", $fileName); while(<$file>) { my $line = $_; while($line =~ s/\|\|/\| \|/){} #print STDERR "OLD: $_\tNEW: $line"; @old = split(/\|/, $_); @new = split(/\|/, $line); } for(@old) { print STDERR "OLD: $_\n"; } print STDERR "\n"; for(@new) { print STDERR "NEW: $_\n"; }