#!/usr/bin/perl -w
use strict;
use IPC::Open3;
use Symbol 'gensym';

my @queue = ("Line 1\nThis is the first line\n",
             "Line 2\nThis is the second line\n",
             "Line 3\nThis is the third line\n",
             );

for my $line (@queue) {

    local *STDOUT;
    open LOG, '>', \my $stdout or die "Can't catch LOG: $!";

    my $pid = open3(my $wtr, my $rdr, undef, 'cat', '-v');
    print $wtr $line;
    close $wtr;

    my $content=do{local $/;<$rdr>};

    waitpid( $pid, 0 );
    close LOG;
}