Ubuntu 12.10 Quantal Quetzal has been released. It ships Gnome Nautilus 3.4.2. This simple tutorial will show you how to install the Nautilus 3.6 in Ubuntu 12.10.

To get started:

First open Ubuntu Software Center, navigate to Edit -> Software Sources… -> Other Software tab. click add and type in this code to add gnome3-team ppa to your repository:

ppa:gnome3-team/gnome3

Now update and install Nautilus 3.6. Hit Ctrl+Alt+T, copy and paste this command into terminal:

sudo apt-get update
sudo apt-get install nautilus

Log out and back in, or run killall nautilus command to take effect.

To downgrade to 3.4.2:

Install ppa-purge and remove the ppa as well as downgrade nautilus with this command:

sudo apt-get install ppa-purge && sudo ppa-purge ppa:gnome3-team/gnome3

Enjoy!