Add and uninstall a desktop environment in Ubuntu

(1) Run and install on the terminal: 1. Install XFACE: sudoapt-getinstallxUbuntu-desktop and click the "Application-attachment-terminal" menu to enter the terminal, enter your user password. 2. Install KDE: sudoapt-getinstallkubuntu-desktop. Use the same method as above. 3. Install Gnome: sudoapt-getinstallubuntu.

(1) Run and install on the terminal:

1. install XFACE: sudo apt-get install xUbuntu-desktop and click "Application-accessories-terminal" to enter the terminal. Enter your user password first.

2. install KDE: sudo apt-get install kubuntu-desktop

Use the same method as above

3. install Gnome: sudo apt-get install ubuntu-desktop

Use the same method as above

(2) install the SDK in the new version:

1. Click "system-system management-New Software Package Manager" and enter your user password,

2. Click "Search" on the right of the window and search by xubuntu-desktop, kubuntu-desktop, and ubuntu-desktop respectively.

3. In the found list, right-click and select "Mark installation"

4. Click the "application" button on the toolbar and click "OK" to install and install the tool. In the logon dialog box, select the corresponding desktop environment.

Unmount the desktop environment (important files should be backed up)

1. Uninstall gnome: sudo apt-get -- purge remove liborbit2

2. Uninstall kde: sudo apt-get -- purge remove kdelibs4c2a libarts1c2a

3. Uninstall xface: sudo apt-get -- purge remove xfce4