use strict;
use warnings;

my $first_file  = shift || 'a.txt';
my $second_file = shift || 'b.txt';

open my $a_fh, '<', $first_file  or die "$first_file: $!";
open my $b_fh, '<', $second_file or die "$second_file: $!";

my %second_file;
@second_file{map { unpack 'A*', $_ } <$b_fh>} = ();

while (<$a_fh>) {
    print unless exists $second_file{unpack 'A*', $_};
}

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In reply to Re: Compare two txt files and print the difference between the two files. by trizen
in thread Compare two txt files and print the difference between the two files. by Anonymous Monk

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