[Eyce]

Do RCON commands work on Linux servers? I'm using a VPS which has Linux (CentOS 6.6) and I tried using /rcon gmx, it would show "The server is restarting..." in-game but it stops there. Can someone please help me on this? Is there a way to use it as a command?

[SimplyFragHosting]

Yes they should. if your on a VPS why not use the console session and then commands on a session.

edit: Depending on your provider you may have to open additional ports for RCON (commonly same as server port)