#!/usr/pkg/bin/bash
tree=$1
die() {
 echo "$@" >&2
 exit 1
}
[ -w "/" ] || die "Must be root"
[ -d "$tree" ] || die "Could not find directory $tree"
cd $tree || die "Cannot chdir to $tree"
mkisofs -R . | cdrecord -speed=8 dev=ATAPI:0,1,0 -