ubuntu18.04，ubuntu20.04 安装gnome-desktop桌面环境方法

Instructions

Gnome Vanilla Installation on Ubuntu

Gnome vanilla installation on Ubuntu 18.04 will leave you with a basic Gnome shell features and minimal pre-installed applications.

To perform a vanilla installation of Gnome desktop execute the following linux command:

sudo apt install gnome-session gdm3

Full Gnome Desktop Installation on Ubuntu

In order to install the full Ubuntu Gnome desktop use the tasksel command. In case the tasksel command is not available on your system you can install it by:

$ sudo apt install tasksel

Once the tasksel command is installed, begin the Gnome desktop installation by executing:

$ sudo tasksel install ubuntu-desktop

Login to Gnome session

To start Gnome session on a system without a current graphical user interface (GUI), login to your console and execute:

$ sudo service gdm3 start

Otherwise, log out from your current GUI session and select GNOME session as your default desktop manager. Alternatively reboot your system if necessary.