#!/usr/bin/perl

# http://perlmonks.org/?node_id=1193719

use strict;
use warnings;
use File::Find;
use Path::Tiny;

my $directory = 'some/test/';

find sub { my %u; -f and /\.txt$/ and
  path($_)->edit_lines( sub { $_ x= !$u{$_}++ } ) }, $directory;

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In reply to Re^3: parse multiple text files keep unique lines only by tybalt89
in thread parse multiple text files keep unique lines only by Anonymous Monk

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