How to restore traditional GNOME interfaces over Ubuntu 12.04

How to restore the traditional GNOME interface over Ubuntu 12.04 and later, Ubuntu 12.04 and later started to use Unity as the interface system, which is too unsuitable for those who have been using the GNOME interface, run the following command on the Linux terminal to restore GNOME desktop on Ubuntu 12.04: [html] sudo apt-get install gnome-session-fallback this command will install some GNOME-related software and the dependent package after executing the above command, restart Ubuntu, the interface is as follows:
If you select either the first or the second item, you can perform the GNOME desktop system. In this way, you can easily return to Ubuntu on the classic Gnome interface, as if everything has never happened, has the core of Ubuntu 12.04, but has no Unity Interface