Install full desktop into Ubuntu 14.04 Server

#just in case that I need to install desktop

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install dkms (optional)
sudo apt-get install --no-install-recommends ubuntu-desktop
sudo reboot

ref:
http://www.htpcbeginner.com/install-gui-on-ubuntu-server-14-04-gnome/
https://www.youtube.com/watch?v=hOPx7-UrR14