Partition Resizing Plan

[Tommy Trussell]

On Fri, Dec 13, 2013 at 9:29 AM, Barry Premeaux <bpremeaux at gmail.com> wrote:

>
> >I have seen this command suggested as a way to get rid of all old kernels
>
> >sudo apt-get remove --purge $(dpkg -l 'linux-*' | sed
> >'/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'
> >/d;s/^[^ ]*
> >[^ ]* \([^ ]*\).*/\1/;/[0-9]/!d')
>
> >but have never had the courage to try it.  This answer on askubuntu
> >[1] suggests some other ways to clean them up.
>
>
> I read through the same article, but didn't care for the possible oops
> factor.  I am more comfortable with picking each kernel I want to
> remove, even if it is a little more time consuming.
>

I did this recently. I don't think this is EXACTLY the same script I used,
but it was the same idea. I, too, didn't trust it, but fortunately you can
copy and paste PORTIONS of it into the terminal. I started with the
right-most pipe and worked my way to everything past the left-most pipe,
until I was comfortable it was working right. HOWEVER in my situation* I
had to modify it slightly....

*My situation was this -- for some reason in the distant past I made my
root partition 10GB and the /home partition fills the rest of the drive. I
think the drive has been replaced and it's now 2TB, but for some reason I
kept the 10GB partition, which even though I only run LTS releases, it
filled up... I at first thought with something in /var/log or /var/cache,
but it turns out it was old kernels.

The way I found out was an LTS kernel update broke... one of the packages
wouldn't install, complaining the drive was out of space (even though it
said it was only 89% full). As it turns out, once this happens to you, you
can no longer use apt-get remove, because apt-get is too "smart" to allow
you to proceed until you fix the broken package.

SO after I verified that I was happy with what the command was selecting, I
changed the script to use dpkg -r instead of apt-get remove, knowing that
dpkg is more "stupid" compared to apt-get. It won't let you remove
INDIVIDUAL packages that have cross-dependencies, but if you pass it a big
list that satisfies the dependencies it will happily comply.

ALL THAT TO SAY, "trust, but verify."
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