So I installed the cinnamon desktop environment on Ubuntu 12.10 but now I want to uninstall it. What would the command line(s) be to uninstall it?
I remember something like that
sudo apt-get purge cinnamon
In my case, I uninstalled it by the command mentioned by Enes. But I was still getting notification for updating Cinnamon.
I solved it by using these two commands:
sudo apt-get purge cinnamon ... sudo apt-get autoremove
In order to remove cinnamon and all the related packages the PPA installed you need first to install PPA-purge: disables a PPA and reverts to official packages.
sudo apt-get install ppa-purge && sudo ppa-purge ppa:gwendal-lebihan-dev/cinnamon-stable
You can see a little example of how to use PPA-purge http://www.webupd8.org/2009/12/remove-ppa-repositories-via-command.html