[Powerlord]

Originally Posted by Relaxing https://developer.valvesoftware.com/...in_Slowhacking

I noticed that the Source Games section of that article is empty.

Probably because Valve eventually realized it was a bad idea to allow servers to execute whatever commands they want and most Source games have a new cvar/command flag SERVER_CAN_EXECUTE and if it's not set, clients just ignore the command.