#!/usr/bin/perl use feature qw(say); use strict; use warnings; use Tie::Array::CSV; tie my @file1, 'Tie::Array::CSV', 'FILE1.CSV'; tie my @file2, 'Tie::Array::CSV', 'FILE2.csv'; foreach my $row (0..$#file1) { my @row1 = @{$file1[$row]}; my @row2 = @{$file2[$row]}; foreach my $col (0..$#row1) { if($row1[$col] ne $row2[$col]) { say "Row " . ($row + 1) . " - " . join ",", @row1; say "Row " . ($row + 1) . " - " . join ",", @row2; } } } #### $ perl test.pl Row 3 - RICK,SULLIVAN,31,MALE Row 3 - RICK,SULLIVAN,30,MALE Row 4 - SILVIA,CONOR,24,FEMALE Row 4 - SILVIA,CONOR,24,MALE $