configure an external display on linux
xrandr commands are really hard to memorize and graphical tools are frustrating, especially when you're setting up a presentation in front of a room full of people
usage: xit mirror Mirror the current primary resolution to the external display resolution, with changing the current primary resolution or geometry. xit right, xit left, xit top, xit bottom Set up the display to the right, left, top, or bottom of the primary display. xit toggle Toggle which of the two displays are active. xit off Turn off external display. xit reset Put everything back to normal.
To get the
xit command, with npm do:
npm install -g xit