There is an excellent article on Ubuntu Genius on how to clean Ubuntu’s Unused Linux Kernel Headers, Images and Modules. While I have been using Linux, Unix and every operating system you can imagine for years, I had no idea this command could do this for Ubuntu- then again, who would - excellent article -
(Run in a terminal window) – Be sure to read the article and paste the recommended code from his article.
Ubuntu Tweak also offers many other cleaning options
Now that is a command, got to love CTRL + C…