chroot bind9 in GNU/Linux Debian

#!/bin/bash

mkdir -p /var/named/{etc,dev}
mkdir -p /var/named/var/cache/bind
mkdir -p /var/named/var/run/bind/{run,log}
mv /etc/bind /var/named/etc
ln -s /var/named/etc/bind /etc/bind
mknod /var/named/dev/null c 1 3
mknod /var/named/dev/random c 1 8
chmod 666 /var/named/dev/*
chown -R bind:bind /var/named/var/*
chown -R bind:bind /var/named/etc/bind