#! /usr/bin/perl -w

use strict;
use File::Find;

my %owned;
find(
    sub { ++$owned{(lstat $_)[4]} unless $_ eq '.' or $_ eq '..' },
    shift || '.'
);

my %name;
$name{$_} = (getpwuid $_)[0] || "[uid $_]" foreach keys %owned;

print "$owned{$_}\t$name{$_}\n"
    foreach sort{ $name{$a} cmp $name{$b} }
    keys %owned;