This project can be used to rotate your screen. There is no user interface (no gui, no terminal).
You can execute it like this
./ScreenOrientationChangeTool.exe 1 1
The first parameter is the index of the display you want to rotate starting with 1. The second parameter is the times you want to rotate it. 0 = stays the same, 1 will rotate once, 2 rotate twice, 3 rotate thrice and 4 will return to 0 (stay the same)
So if you want to rotate your monitor 180 you would do
./ScreenOrientationChangeTool.exe 1 2
Since I only needed the result, and am absolutely not a visual basic programmer, the code represents that too.