#!/bin/bash

for i in 1 2 3 4 5 6 7 8 9
  do
  rm -rf dir1
  rm -rf dir2
  mkdir -p dir1 dir2
  for j in 1 2 3 4 5 6 7 8 9 0
    do
	echo hi >dir2/foo
	echo lo >dir2/bar
	ln dir2/foo dir1/file1
	ln dir2/bar dir1/file2
	(cat str; rm -f dir2/foo) >>dir2/foo
	cat dir1/file1 >/dev/null
	(cat str; rm -f dir2/bar) >>dir2/bar
	cat dir1/file2 >/dev/null
	rm -f dir1/file1
	rm -f dir1/file2
    done
done
