Here's another: a bit cleaner and about 30% faster. 
#!/usr/bin/perl -w
use strict;
$/ = \16;
my $line_no = 0;
binmode ARGV;
while(<>){
  my @hex = map{sprintf "%02x",ord($_) & 0xff} split//;
  push @hex, ('  ') x (16 - @hex);
  tr/\000-\040\177/./;
  printf "%05x %s %s\n", $line_no++, "@hex", $_;
}

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In reply to Re: simple hexdump by Anonymous Monk
in thread simple hexdump by moxliukas

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