This question already has an answer here:
Let's assume that we are using Ubuntu 18.04 LTS (Bionic Beaver).
I know GUI ways to enable or disable the following repositories:
- Important security updates (
- Recommended updates (
- Pre-released updates (
- Unsupported updates (
In KDE user may want to open Software & Updates (or
software-properties-kde) and navigate to Updates tab.
In GNOME, MATE, Xfce user should open Software & Updates (or
software-properties-gtk) and navigate to Updates tab for
-backports and Developer options tab for
But how to enable or disable
-proposed repositories from commandline?
Note: I need a solution without direct editing of