use strict;
use warnings;

use File::Slurp;



my $read_file = read_file( "file" ); #read_file

my $memory_file; #declare memory file

my ( $buf, $data, $n, $bytes ); #declare variables

while (( $n = read $read_file, $data, 4096 ) != 0 ) {
	print $memory_file, pack( "v*", unpack("n*", $data ));   #byte reverses 
	$bytes+=$n;
}

open ( my $write_file, ">", "reversed" );  #writes byte reversed memory file to
syswrite ( $write_file, $memory_file );    #disk AFTER it byte reverses in
                                            #memory.


read ( $memory_file, $stuff, 0x200 );      #should return a value but doesnt
print ( $stuff );