#!/usr/bin/perl -w
use strict;
use File::Find;

print "Total: ",
     GetFolderSize( defined $ARGV[0]?$ARGV[0]:'.'),
     $/;

sub GetFolderSize {
     local $% = 0;      	
     find( { wanted => sub {
          local ($-,$=) = (-s,(stat)[11]);
          $%+=(int($-/$=)+($-%$=?1:0))*$=   
     }},shift);$%
}