#!/bin/bash

# J.Kobus klucz/2017

for n in 0 1 2 3 4 5 6 7; do
    test=$n
    for i in 0 1 2 4; do
	for j in 0 1 2 4; do
	    for k in 0 1 2 4; do
		[[ $i == $k ]] && continue
		
		[[ $j == $k ]] && continue
		
		let l=$i+$j+$k
		
		(( $l>7)) && continue
		
		file=testfile-$test-$l
		touch $file
		perms=$(echo $l$n)0
		chmod $perms $file
	    done
	done
    done
done