> >    unit=`printf %02x $ounit`
> One problem is that printf is dynamically linked and on /usr...

How about this:-)

	prhex2()
	{
		val=$1
		set 0 1 2 3 4 5 6 7 8 9 a b c d e f
		shift $(($val/16))
		echo -n $1
		set 0 1 2 3 4 5 6 7 8 9 a b c d e f
		shift $(($val%16))
		echo $1
	}

Atsushi