Remove linux version 3.19.31
9212
Freeze after upgrading kernel to 3.13.0-66 (14.04) or 3.19.0-31 (15.04)
65009
How to remove a repository?
1771
How to get rid of 'security updates available' warnings?
86747
Undo the Linux trash command
32775
Inno Setup: How to automatically uninstall previous installed version?
65612
How to delete/remove manually apt added repositories?
30004
How can I uninstall software?
135378
How to cleanly remove Homebrew
88810
Removing an Ubuntu installation
157354
How to remove lubuntu-desktop from Ubuntu 14.04 LTS
109851
how to remove other linux os and stay with ubuntu only
148193
How to Uninstall RVM?
151150
apt-get autoremove wants to remove linux headers
96500
How to delete kexts in Catalina?
114668
Remove Gnome Shell completely after installing it?
78032
How do I delete/remove a shell function?
18266
How do I completely remove Ubuntu?