Commit b64e86cd authored Jul 10, 2013 by J. Bruce Fields Committed by Linus Torvalds Feb 09, 2016

scripts: add "prune-kernel" script to clean up old kernel images



Long ago, Dave Jones complained about CONFIG_LOCALVERSION_AUTO:
 "I don't use the auto config, because I end up filling up /boot unless
  I go through and clean them out by hand every time I install a new one
  (which I do probably a dozen or so times a day).  Is there some easy
  way to prune old builds I'm missing?"

To which Bruce replied:
 "I run this by hand every now and then.  I'm probably doing it all wrong"

And if he is running it wrong, then so am I - because I've been using
this script ever since.  It is true that CONFIG_LOCALVERSION_AUTO easily
ends up filling your /boot partition if you don't clean up old versions
regularly, and this script helps make that easier.

Checked with Bruce to see that it's fine to add this to the kernel
scripts.  Maybe people will come up with enhancements, but more
importantly, this way I won't misplace this script whenever I install a
new machine and start doing custom kernels for it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 765bdb40

scripts/prune-kernel

0 → 100755

+20 −0

Original line number	Diff line number	Diff line
		#!/bin/bash

		# because I use CONFIG_LOCALVERSION_AUTO, not the same version again and
		# again, /boot and /lib/modules/ eventually fill up.
		# Dumb script to purge that stuff:

		for f in "$@"
		do
		if rpm -qf "/lib/modules/$f" >/dev/null; then
		echo "keeping $f (installed from rpm)"
		elif [ $(uname -r) = "$f" ]; then
		echo "keeping $f (running kernel) "
		else
		echo "removing $f"
		rm -f "/boot/initramfs-$f.img" "/boot/System.map-$f"
		rm -f "/boot/vmlinuz-$f" "/boot/config-$f"
		rm -rf "/lib/modules/$f"
		new-kernel-pkg --remove $f
		fi
		done

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