Install Ubuntu Unity Help lens 2.0
How to update Unity's Help lens to version 2.0
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.