I don't know what command line is all I know is that ARCADE works using the fe Hyperspin. You might need to read more about what's happening with ARCADE as it's only gonna be released when there's been good enough work on arcade systems from now on as far as I know.
I just don't know all the info on what's been going on & why some people don't want the ui arcade side of things to carry on but it's a shame things have ended up like this.
We all just love games whatever platform you just prefer shouldn't matter.