I need to remove Pitivi video editor and Cinelerra and a few more applications, I have seen people talking about how to uninstall something completely but the problem is that I don't even know the "name" of my applications. When I say "name", I mean the name that I could put in the terminal to run/install/remove them. Please help me, my computer is running out of disk space.
You could use
apt-cache search KEYWORDS to search for the package name which contains KEYWORDS in its description.
You can also use
dpkg -l PACKAGENAME to list all installed packages that match the pattern PACKAGENAME. You can use
? (one arbitrary character) and
* (any number of arbitrary characters) as wildcards.
sudo apt-get autoremove --purge PACKAGE to remove PACKAGE completely, including configuration and all no longer needed dependencies.
Example for PiTiVi:
Find out the package name:
$ apt-cache search PiTiVi pitivi - non-linear audio/video editor using GStreamer
Purge the package and its dependencies:
$ sudo apt-get autoremove --purge pitivi [...some output...]