gnome-control-center

Recently, we tried to understand why creating a hotspot would not work in Fedora 25 with Gnome 3.

Starting the control panel from the GUI (the launcher, or the power cog) did not provide us with the debug messages needed to understand what was going on.
So we needed the command to use that would start the control panel from a a terminal window

For Ubuntu 14.04 and newer, which by default are deployed with Unity, we used:

unity-control-center;

For Ubuntu 13.10 and older versions, which were deployed with Gnome 2, we used:

gnome-control-center;

For Fedora 25 with Gnome 3, we used again:

gnome-control-center;