How do I Give Sudo Privilege to a GUI application

This will be a quicky tip.

We all know of the sudo giving temporary root privilege to command-line functions, but what about GUI programs? They need the GUI authentication, or there will not be a chance to enter it.

Well, there is a new command in town to accomplish this task, you can enter pkexec and it will give you a graphic authentication for root useage.

Example: to open Nemo files with root privileges, go to a terminal and type in:

pkexec nemo

Once you hit enter, it will allow you to enter your password and run the program with root privilege. That's it!