Changing your Ubuntu installation into a rolling release 2016

How to do it

For the purpose of this tutorial, I will use the latest stable version of Ubuntu desktop that is 15.10 codenamed as “Wily Werewolf”.

Preliminary

1. Backup everything you can't afford to loose into an external drive.
2. Remove all existing PPAs with the “ppa-purge” command.
3. Uninstall any proprietary graphics card drivers.
4. Reboot your Ubuntu system.

Note that you can also remove any PPAs from your system through the “Software & Updates” tool by selecting it and clicking on the “Remove” button.

After restarting your system, open a terminal and insert the following command:

sudo sed -i 's/wily/devel/g' /etc/apt/sources.list

This is the command that will change your system from a “standard” 15.10 to an Ubuntu development distro. See how all sources changed to development channels after I run this command.

Now open a terminal and type the command

sudo apt-get update

followed by

sudo apt-dist-upgrade

Then press “y” and hit Enter and your stable distribution will receive updates to its default package selection.

After this is done, you may add the PPAs that you desire and perform the last two commands again and you will have the latest versions of the apps you want. There is no need to change those PPAs anytime, as we do when we upgrade to the next Ubuntu version.

Things to note

1.) By default, Ubuntu points to servers located in your country for load distribution reasons. This will cause additional problems in our case, so if you're transforming your standard Ubuntu into a rolling one, make sure to change the download server to the main one from the Software & Updates tool.

2.) During the 6-month development period, the software channels named “Pre-Release” and “Unsupported” remain closed. This can generate several error messages when trying to update your system, so you can disable them from the Software & Updates tool, if they weren't already auto-disabled.

3.) Sometimes, you will encounter stubborn problems that won't let you update your system with the regular methods. The commands that can help you overcome these errors are the:

sudo apt-get -f install

and

sudo apt-get -f dist-upgrade

That's it! Have fun with your rolling Ubuntu system, and good luck keeping it in a good working condition.