Purge unused Linux kernel image

#! /bin/sh
#
# Copyright (C) 2003, 2005-2007 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
#
# Remove unused linux kernel image from system
# save it to /usr/bin/purgekernel.sh
# Usage: purgekernel.sh <kernelnum>
#      where <kernelnum> would be something like 2.6.32-38
apt-get --purge remove linux-image-$1-generic linux-headers-$1 linux-headers-$1-generic
rm -rf /lib/modules/$1-generic