A Personal Package Archive (PPA) is a special software repository for uploading source packages to be built and published as an APT repository by Launchpad. While the term is used exclusively within Ubuntu, Launchpad host Canonical envisions adoption beyond the Ubuntu community.

Usually PPAs can be added to system using add-apt-repository command.

Today, here I'm going to show you how to remove the PPAs from system.

[Method 1]

You can use the --remove flag, similar to how the PPA was added

sudo add-apt-repository --remove ppa:<ppa name>/ppa

or install ppa-purge and remove the PPAs using ppa-purge

sudo apt-get install ppa-purge

And then remove the PPA.

sudo ppa-purge <ppa-name>

Anyway, this won't uninstall packages that were on the PPA but not on tha official repositories. If you want to remove them, you should tell it to apt:

sudo apt-get purge package_name

[Method 2]

Normally, as ppas are stored in /etc/apt/sources.list.d you can find the one you want to remove by entering:

ls /etc/apt/sources.list.d

It will list out all those PPAs that are currently installed on the system.

If you want to remove anyone of the PPA that listed there, just delete the .list file of that ppa.

Example if you want to remove ppa of google-chrome, remove google-chrome.list. This will remove the google-chrome ppa from system.

sudo rm -i /etc/apt/sources.list.d/google-chrome.list

Please be careful using rm command. always use -i option while using rm. It will ask the confirmation.