kscreen-doctor
Change and manipulate the screen setup from the command-line.
TLDR
Show display output information
$ kscreen-doctor --outputs
Set the rotation of a display output with an ID of 1 to the right
$ kscreen-doctor [output.1.rotation.right]
Set the scale of a display output with an ID of HDMI-2 to 2 (200%)
$ kscreen-doctor [output.HDMI-2.scale.2]
