Command Line Server

Ive ran a server for the game Rust, and its a command line application for the server. How might I do this with unity and not have to worry about limiting players and such to do it without lag?

 

Here's a blog post on how Rust does console line servers:
https://garry.tv/2014/04/23/unity-batchmode-console/

Here's a blog post going over Rust's networking setup:
https://garry.tv/2016/02/18/rusts-networking/