Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Actually I want to upgrade to the newly released Ubuntu 14.04 from a saucy 13.10 version. Regarding that I never run into an upgrade process from a *nix version to an onward one, I want your kind rectification on what files will be changed in this upgrade process:

  • Does non official repository (ppa) will be lost?
  • If some sources modified, will they be backed up to original state?
share|improve this question
up vote 3 down vote accepted

The non-official repos are disabled during upgrade.

I am not sure about your second point. Which sources are you referring to? Is it the ppa sources? Yes they are backed up but disabled.

After the upgrade is complete, you can check the status of those ppas from "Software Sources", and re-enable them. I guess you will need to purge gnome3 ppas if you are using them before you upgrade.

You can use a tool called y ppa manager, which you might find helpful to enable/disable individual ppas (ppa:webupd8team/y-ppa-manager).

share|improve this answer
Thanks for clarifying those points, and what about personal data and session files (.profile ,.bashrc...) No need to care? – tmarwen Apr 20 '14 at 12:48
The upgrade process attempts to keep installed applications whenever it can. I would say that .bashrc and _profile files should also persist. – Swarnendu Biswas Apr 20 '14 at 16:40
~/.profile and ~/.bashrc are preserved; nothing in the homes will be touched (although some applications, when you upgrade them, update the format of their config files when first run). However,/etc/bashrc and /etc/profile will be updated. I think that if you modified them by hand, then the upgrade system will notice and ask for confirmation (not 100% sure though; double-check if it's vital for you). – Federico Poloni Apr 20 '14 at 17:16
@tmarwen there isn't the term as "official PPA". PPA's are 3rd party repositories always. The only official are the mirrors of Ubuntu. – Braiam May 16 '14 at 1:19
@Braiam, thanks for clarification :) – tmarwen May 16 '14 at 16:37

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.