#!/bin/bash

for i in 1 2 3 4 5 6 7 8 9
  do
  mkdir a
  for j in 1 2 3 4 5 6 7 8 9 0
    do
      for k in 1 2 3 4 5 6 7 8 9 0
      do
	touch a/$j$k
      done
    done
  rm -rf a
done
