Here is a hex dump program similar to the one posted by tachyon. This one is for relatively small files where you want to examine each byte carefully. I used it for debugging code that generates .wav files.

#!/usr/bin/perl
use strict;
use warnings;
use diagnostics;
 
=head1 NAME
 
dump.pl
 
=head1 SYNOPSYS
 
perl dump.pl chimes.wav > chimes.raw
 
=head1 DESCRIPTION
 
This routine reads a file and prints out a ascii dump.
 
=cut
 
$/ = "";
$_ = <>;
my $i=0;
 
for (unpack("C*", $_))
{
  print $i++."\t".$_."\t".chr($_)."\n";
}
[download]

It should work perfectly the first time! - toma