Regardless of how you install and uninstall software on your Linux computer, there is a tendency for a software packages configuration files to still linger on your computer. It doesn’t hurt anything of course, but it does take up valuable hard drive space.
So how do I fix that? Easy! Periodically open your Package Manager, Select the Status button on the left hand side and select, Not Installed (residual config) as shown here:
Next, select all of the software in the right-hand pane using [CTL]+A
then Right clicking on your mouse and selecting Mark For Complete Removal
This will bring up the final dialog, so you can review what is going to be removed.
Once you’re sure, click the Apply button. It won’t take too long, no software is actually being deleted, just the configuration files left over from when you uninstalled the software originally.
Just make sure you no longer plan on reinstalling the software at a later time, otherwise you will need to reconfigure it again.
It’s a simple way to help keep your hard drive clean and tidy!