#!/usr/bin/env bash set -x gen_fio_file() { iter=$1 f=$2 cat > randio-$$-${iter}.fio </dev/null | wc -l) donef="foo" fiof="bar" if test ${fcount} -gt 0; then # choose random file r=$[ ${RANDOM} % ${fcount} ] testfiles=( $(ls donetestfile*) ) donef=${testfiles[${r}]} fiof=$(echo ${donef} | sed -e "s|done|fio|") gen_fio_file $i ${fiof} else fiof=fiotestfile.$$.$i donef=donetestfile.$$.$i gen_fio_file $i ${fiof} fi sudo rm -f ${donef} sudo fio randio-$$-$i.fio sudo ln ${fiof} ${donef} ls -la done