mkdir.sh

#!/bin/bash

TMPDIR=$1

usage="USAGE: mkdir.sh TMPDIR\n"

[ -z $TMPDIR ] && printf "$usage" && exit

mkdir -p $TMPDIR

for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f
do
    for j in 0 1 2 3 4 5 6 7 8 9 a b c d e f
    do
	for k in 0 1 2 3 4 5 6 7 8 9 a b c d e f
	do
	    for l in 0 1 2 3 4 5 6 7 8 9 a b c d e f
	    do
		echo $((time (mkdir -p $TMPDIR/$i$j/$k$l) 2>&1 ) | grep real | sed -e 's/real//' | tr -d '\t')
	    done
	done
    done
done