September 28, 2012, 2:04 PM — Here's how you can install Ubuntu's Unity Help lens 2.0 on your Linux system.
1. Open a terminal window.
2. Type in the following commands, then it Enter after each:
sudo add-apt-repository ppa:askubuntu-tools/ppa
sudo apt-get update
sudo apt-get install unity-lens-help unity-scope-asklibreoffice unity-scope-askubuntu unity-scope-manpages unity-scope-sumo
3. Restart your computer after the install is complete.
For more, see the original article at the link below.