Install and configure gnome3 in UBUNTU12.04

Gnome3 UBUNTU12.04 adopts the unity interface by default. However, gnome3 is preferred. install gnome3: sudo apt-get install gnome-shell after the installation is successful, log out of the system and select GNOME on the logon interface. after entering the system, the GNOME3 interface is displayed. however, due to system cleaning, you always want to uninstall the unity interface. set the default logon desktop environment to GNOME3. use the gnome3 interface to log on to the system and set it as the default logon environment: sudo/usr/lib/lightdm-set-defaults-s gnome-classic sudo/usr/lib/lightdm-set-defaults-s gnome-shell in some strange ways, always want to uninstall Unity: sudo apt-get-y -- auto-remove purge u Nity sudo apt-get-y -- auto-remove purge unity-commonp sudo apt-get-y -- auto-remove purge unity-lens * sudo apt-get-y -- auto-remove purge unity-services sudo apt-get-y -- auto-remove purge unity-asset-pool after logging on to the system again, the default interface is the GNOME3 interface. in addition, the unity and unity2d options are no longer available in the selected desktop project. further Configure the GNOME3 interface: first install a tool to facilitate management, installation of themes and desktop settings. sudo apt-get installgnome-tweak-tool currently the most popular Icon topic is Faenza Icon Theme. sudo add-apt-repository ppa: tiheum/equinoxsudo apt-get updatesudo apt-get install faenza-icon-theme after installation, in System Tools-advanced settings, set the icon to faenza. note: GNOME Shell is an important part of GNOME 3. It provides window switching, opening applications, and other functions. Together with the window manager, it forms the GNOME 3 desktop we see.