The Unity team has released a testing version of Unity (Unity 5.0) that is currently available for only Ubuntu 12.04 Precise Pangolin that comes with new features. When you right-click, for example, the Dash button, a new menu is added, which is not possible in the previous version of Unity:

We will see two methods for installing and testing this new release on Ubuntu 11.10 Oneiric Ocelot as described below. Before starting the tutorial, you should bear in mind that we are not responsible for any damage that this information may cause to your system. Just try this on Virtualbox or a system not used for working.

Method 1

You can simply try it by installing from this PPA:

sudo add-apt-repository ppa:unity-team/staging
sudo apt-get update
sudo apt-get install unity

Restart now Unity with this command:

setsid unity

If you get problems while using this PPA, you can try Method 2.

Method 2 

Add first the Unity team PPA for Precise Pangolin with these commands:

sudo sh -c "echo 'deb http://ppa.launchpad.net/unity-team/ppa/ubuntu precise main' >> /etc/apt/sources.list"

sudo sh -c "echo 'deb-src http://ppa.launchpad.net/unity-team/ppa/ubuntu precise main' >> /etc/apt/sources.list"

sudo apt-get update

As Unity 5.0 requires some dependencies to work in Ubuntu 11.10, we need to use the aptitude package to resolve and force install these dependencies. Open the terminal and install aptitude with this command:

sudo apt-get install aptitude

Install now these dependencies (READ CAREFULLY given prompts):

sudo aptitude install libunity-core-5.0-5 libunity-core-5.0-5 libnux-2.0-0 libdee-1.0-4 unity-common libnux-abiversion-20111214

If you get this at the first prompt, which asking you to remove packages such as gnome-session, ubuntu-desktop, unity-2d, etc.:

Then type n (NO) and press Enter.

 In the next prompt:

type Y (Yes) and press Enter.

Next, type Y and press Enter to confirm:

Type Yes again to start the installation of missing dependencies:

Download and install now Unity 5.0 with these commands:

sudo apt-get download unity
sudo dpkg -i unity*.deb

Reboot now your system. Unity 5.0 is now installed. To send feedback while testing this new release, you can search the dash for Unity Testing:

That's it!

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