On Cinnamon, you can set a hotkey to force the active window into full screen mode; many programs have a full screen toggle built in. What I'm wondering is, what's the command that's being sent? How would you issue such a command in a terminal emulator to resize an application window so that it includes the space occupied by taskbars/panels?
Based on @dirkt's comment I went and had a look at
wmctrl, which is a command line tool that let's you set these yourself. If you'd like to do things like toggle fullscreen for whatever programs you like from a shell script or any other custom place, this is ideal for that.
Here's an example that toggles fullscreen for the currently active window:
wmctrl -r ':ACTIVE:' -b toggle,fullscreen