#!/bin/bash

show_perms() {
	if [ "$#" -ne 1 -o ! -e "$1" ]; then
		echo "usage: $0 <filename>" 1>&2
		exit 1
	fi
	local canonical="$(readlink -f "$1")"
	if [ "${canonical}" != "/" ]; then
		show_perms "$(dirname "${canonical}")"
	fi
	ls -ld "${canonical}"
}

show_perms "$@"