Install gnome package via sudo apt-get install ubuntu-desktop. You might additionally need to install: x-window-system-core, xserver-xorg, gnome-desktop-environment, gdm but apt-get will probably do that.
Install gnome package via sudo apt-get install ubuntu-desktop. You might additionally need to install: x-window-system-core, xserver-xorg, gnome-desktop-environment, gdm but apt-get will probably do that.