GNU/Linux Ubuntu 16.04 Installing GKSu – Quick-Start Guide
You Are Welcome! The Tutorial Shows You Step-by-Step How-to Download and Install GKSu in Ubuntu 16.04 Xenial LTS GNU/Linux Desktop.
And GKSu for Ubuntu 16.04 is a Library that provides a Gtk+ Frontend to su and sudo.
Furthermore, it supports login shells and preserving environment when acting as a su frontend. It is useful to Menu items or other Graphical Programs that need to ask a user’s Password to run another Program as another User.
Especially relevant: GKSu is Deprecated and has been removed from the latest GNU/Linux Repositories.

1. Terminal QuickStart
How-to Quick-Start with Command Line on Ubuntu
First Update the Apt Repo Sources with:
sudo apt update
Contents
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