wmctrl dual monitor specification - lmmx/devnotes GitHub Wiki
You can interface with the X window manager with a few programs
wmctrl resources
- man page
- user doc 1
- user doc 2
- how to shift applications from workspace 1 to 2 using command
- specific answer re: dimensions
There's also apparently problems when using wmctrl with a Unity desktop.
- StackOverflow answer I left regarding this issue 23 June '16