#!/bin/sh -

if [ $# -gt 0 ]; then
	if [ $# -eq 1 -a -d "$1" ]; then
		DIR="$1"
	else
		echo "Usage:  `basename $0` [<directory>]" >&2
		exit 1
	fi
else
	DIR="."
fi

find "$DIR" -ls \
| awk '
{
	inode = $1;
	if (have[inode])
		next;
	have[inode] = 1;
	blocks = $2;
	user = $5;
	sum[user] += blocks;
	num[user]++;
}
END {
	for (user in sum)
		printf "%d\t%d\t%s\n", sum[user] / 2, num[user], user;
}
' \
| sort -n -r

#--