purge-old-kernels - remove old kernel and header packages from the system

       This manpage and the utility was written by Dustin Kirkland <kirkland@ubuntu.com> for Ubuntu systems (but
       may be used by others).  Permission is granted to copy, distribute and/or modify this document under  the
       terms of the GNU General Public License, Version 3 published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-
       licenses/GPL, or on the web at http://www.gnu.org/licenses/gpl.txt.

byobu                                              30 Apr 2012                              purge-old-kernels(1)

       This utility is now deprecated.  The functionality it used to provide should be integrated into apt(8).

       If   you   still   have   old   kernels  lying  around  after  this,  please  file  a  bug  against  apt:
       https://bugs.launchpad.net/ubuntu/+source/apt/+filebug

       This program requires administrative access.

       sudo purge-old-kernels

       purge-old-kernels - remove old kernel and header packages from the system

apt-get(8)

purge-old-kernels