KDE

sudo add-apt-repository ppa:kubuntu-ppa/backports
sudo apt-get update
sudo apt-get install kubuntu-desktop

 XFCE

sudo apt-get install xubuntu-desktop

Cinnamon

sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable
sudo apt-get update
sudo apt-get install cinnamon

MATE

sudo add-apt-repository "deb http://packages.mate-desktop.org/repo/ubuntu $(lsb_release -cs) main"
sudo apt-get update
sudo apt-get install mate-archive-keyring
sudo apt-get install mate-core
sudo apt-get install mate-desktop-environment

Sursa: http://www.askubuntu.com