February 03, 2012, 1:58 PM — Here's how you can add a number of helpful lenses to your Unity desktop.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
sudo add-apt-repository ppa:jsevi83/unity
sudo add-apt-repository ppa:atareao/lenses
sudo apt-get update
3. Here is a list of commands to add the following lenses to your Ubutu Unity desktop environment. Just type in the commands, not the names above them.
Graphic Design Lens
sudo apt-get install unity-scope-colourlovers
Contacts Lens
sudo apt-get install scope-contacts-google
sudo apt-get install lens-contacts
Tomboy Lens
sudo add-apt-repository ppa:remi.rerolle/unity-lens-tomboy
sudo apt-get update
sudo apt-get install unity-lens-tomboy
Flickr and Photo Lens
sudo apt-get install unity-scope-flickr
YouTube Lens
sudo apt-get install lens-video
sudo apt-get install scope-youtube
Book Lens
sudo apt-get install unity-lens-books
For more, see the original article at the link below.

Install Best Important Lenses in Ubuntu Unity 12.04/11.10 | NoobsLab














