The Gnome Shell 3.6 builds are available for Ubuntu 12.10; but if you want to install the unstable builds of Gnome Shell 3.7 to test it out on your computer, then these commands will install it. sudo add-apt-repository ppa:gnome3-team/gnome3 #The GNOME3 team PPA</code>   sudo add-apt-repository ppa:gnome3-team/gnome3-staging #The GNOME3 staging PPAsudo add-apt-repository ppa:gnome3-team/gnome3 #The GNOME3 …