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.