Gentoo VserverScript

#!/bin/bash
#
# script to start the vservers mountpoints,
# for more information see
# http://vdr.gentoo.de/wiki/index.php/VdrEbuildDevelopmentUmgebung
#
# by mad@cc.fh-lippe.de
#

if [ -z "$1" -o -z "$2" ]; then
        echo "usage : vserver.sh name [start|stop]"
        exit 1
fi

if [ ! -d "/vservers/$1" ]; then
        echo "Sorry, no vserver dir!!"
        exit 1
fi

case "$2" in
        start)
        mount --bind /proc /vservers/$1/proc
        mount --bind /dev /vservers/$1/dev
        mount --bind  /var/lib/init.d /vservers/$1/var/lib/init.d/
        #mount --bind /usr/portage /vservers/$1/usr/portage
        #mount --bind /video /vservers/$1/video
        chroot /vservers/$1 /bin/bash --login
        ;;

        stop)
        umount /vservers/$1/proc
        umount /vservers/$1/dev
        umount /var/lib/init.d /vservers/$1/var/lib/init.d/
        #umount /vservers/$1/usr/portage
        #umount /vservers/$1/video
        echo "done."
        ;;

        *)
        echo "Usage: vserver.sh name [start|stop]"
        exit 1
        ;;
esac