Uninstall Application or Packages in Ubuntu or linux

Uninstall Application  in Linux:

To get the application package name need to uninstall :

dpkg --list

To remove all the conf and app files:
sudo apt-get --purge remove <application name>

To uninstall app files without removing config files:
sudo apt-get remove <application name>

To remove the dependencies:
sudo apt-get auto-remove

To remove downloaded archive :
sudo apt-get clean