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On 05/29/2014 11:02 AM, Horatio Leragon wrote:
> I am using Debian 7.5 with linux-image-3.2.0.4-amd64 (let us call it
> the original stable linux-image)
>
>
> Suppose the following scenario takes place:
>
> 1. I upgrade the linux-image to 3.14-0.bpo.1-amd64 2. I remove the
> original stable linux-image using the following command which I found
> after googling:
>
> dpkg --list 'linux-image-*' \
> | perl -ane 'BEGIN { $r = `uname -r` or die; chomp $r } print $F[1], "\n"
> if $F[0] eq "ii" && $F[1] !~ /\Q$r\E\b/' \
> | xargs -r aptitude purge -y
Although this should work, it's unnecessarily complicated if all you
want to do is remove a single linux-image package. This looks like it's
designed to remove all kernel packages except the one for the kernel
that's currently running.
> 3. A month later I decide to have the original stable linux-image
> back.
>
> Short of reinstalling the OS, is there an alternative?
First, check to see whether the old version is still available through
your configured repositories:
$ apt-get update
$ apt-cache policy linux-image-3.2.0-4-amd64
If you're in luck, you'll see something like the following:
========
linux-image-3.2.0-4-amd64:
Installed: 3.2.57-3
Candidate: 3.2.57-3
Version table:
3.2.57-3 0
500 http://ftp.us.debian.org/debian/ stable/main amd64 Packages
========
If that is the case, then you should be able to reinstall the old kernel
easily, like any other package:
$ apt-get install linux-image-3.2.0-4-amd64
It's not guaranteed that you will get *exactly* the same version as
before; for example, if kernel security updates have been released and
packaged for Debian stable, you may get a kernel that includes those as
well. However, at worst, you will get the same kernel that someone doing
a new install today would get.
If you instead see something like
========
N: Unable to locate package linux-image-3.2.0-4-amd64
N: Couldn't find any package by regex 'linux-image-3.2.0-4-amd64'
========
then you will have more difficulty. It's still possible, but which
approaches will work depend on the configuration of the rest of your
system, as well as a few outside factors.
- --
The Wanderer
Secrecy is the beginning of tyranny.
A government exists to serve its citizens, not to control them.
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