#!/bin/bash set -eu cd owtest-tmp rm -Rf * sync echo "$0: Running create loop" for i in `seq -w 1 10000` do echo "old file content" > $i.cur done sync echo "$0: Running overwrite loop" ( sleep 30s ; echo "$0: 30s" )& for i in `seq -w 1 10000` do echo "new file content of different size" > $i.tmp mv $i.tmp $i.cur done