Al, just an update (perhaps), or may be OS and (sub) version-specific, you be the judge.
The following is from an environment where I have added to my collection (via multi-boot) Linux Mint Cinnamon 17.2 codenamed Rafaela, just the 32-bit edition for now as I help another user or two.
The gksudo option for firing up a GUI (graphical user interface) application from Terminal is not required here. Rafaela uses the Nemo File Manager.
Press enter and outcome is:
Then, as Root:
and outcome is
Note the differences.
Members and Users passing by, please note Al1000's warning
For security reasons, do not start applications with root permissions unless it is necessary to do so.
It's a bit of "Kids, don't try this at home"
I only use Root because I am always installing OSes under a multi-boot setup, and need to be able to change permissions globally in order to access files and folders on my other OSes and external HDD.
I still think about 3 times before I use it, if an alternative is available to me.
Ask questions about root privileges, administrator privileges, and sudo, and you will likely be answered.
Thanks Al1000 for a good Topic!
Edited by Chris Cosgrove, 20 November 2015 - 06:05 PM.
Topic title edited at OP's request