In the example below, $file is lines of data that can contain a null, \x00 in hex, within a string. When the lines of data are written out to $new_file, the null value is being replaced by a regular space, \x20 in hex. I tried opening both files with :utf8, but I don't even know if that has anything to do with the problem. I want to write the lines of data as-is from $file to $new_file. Any help is greatly appreciated. 
use strict;
use warnings;
use Data::Dumper;

my $file = $ARGV[0];
my $new_file = $file . '.new';
open (my $fh, "<", $file) or die $!;
open (my $new_fh, ">", $new_file) or die $!;

while (my $line = <$fh>){
    print $new_fh "$line";
}

close $fh;
close $new_fh;

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In reply to Null \x00 being replaced by space \x20 by BaldGorilla

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