revert an upgrade?

[Colin Law]

On 26 April 2014 12:44, Karl Auer <kauer at biplane.com.au> wrote:
> On Sat, 2014-04-26 at 12:31 +0100, Colin Law wrote:
>> > So my question is, how can I "redo" the last set of updates?
>> > Specifically from kernel 3.11.0.19 to 3.11.0.20? Or back out the upgrade
>> > completely?
>>
>> Have you tried
>> sudo apt-get update && sudo apt-get dist-upgrade
>
> Thanks for the suggestion, but having re-read the description of
> dist-upgrade it is unclear to me how this will resolve my problem. I
> have already done an "apt-get update" and an "apt-get upgrade", which
> resulted in no changes because as far as apt-get is concerned, it
> appears my system is up to date. What will dist-upgrade do differently?
> In particular, I'm on 13.10, with 14.04 available - I would not want
> apt-get to start trying to install version 14.04!
>
> Is dist-upgrade "safe" in that sense?

Yes it is safe, it does not upgrade to the next release.  The only
difference from upgrade (I believe) is that any new packages required
will also be installed.  When you do an update through Update Manager
it effectively does dist-upgrade.

The command to upgrade to the next release of Ubuntu is do-release-upgrade.

Colin