linux-kernel - Re: kernel pruning script..

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Message-ID: <alpine.DEB.2.10.1602101304290.16000@chino.kir.corp.google.com>
Date:	Wed, 10 Feb 2016 13:05:46 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
cc:	"J. Bruce Fields" <bfields@...ldses.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: kernel pruning script..

On Mon, 8 Feb 2016, Linus Torvalds wrote:

> > I run this by hand every now and then.  I'm probably doing it all wrong.
> >
> > --b.
> >
> > #!/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:
> >
> > ssh "root@$1" '
> >
> > for f in $(ls /lib/modules); do
> >         if rpm -qf "/lib/modules/$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
> > '

I do something similar to this on a regular basis as well, but I also rm 
-rf /lib/firmware/$f