The helper that runs RoachNet's servers has a command line too. It lives inside the app, at ~/RoachNet/app/RoachNet.app/Contents/Helpers/roachnet-runtime.
--provision-alias takes --hosts-file PATH to edit another file. Editing /etc/hosts needs administrator rights, so --print-command prints the command instead of running it, for you to run yourself.
Exit codes
Code
Meaning
0
Success. --install also prints where it installed RoachNet.
1
Failure. The reason is printed on standard error, for example RoachNet install failed: …