@The Stig Thanks for the reply, I have a dedicated server.
I compared the commands that showed "unknown command," and indeed, they only appear for the addons I don't have. For example, "ttt_tweaks_dead_ringer_original_behaviour 1" isn't showing, so it must be working.
It looks like everything should still work for the addons I do have. Thanks again for the response!

@Suchti On Tour If you're hosting a game from the main menu, you need to put the commands into "listenserver.cfg" instead. server.cfg is for dedicated servers.

Also, commands will only be available if they are actually needed. For example, if you put in ttt_tweaks_railgun_no_karma_penalty 0 but you don't actually have the railgun installed on your server, you'll also get an "Unknown Command" error because there's no railgun to tweak.

Hey, how can i turn off others things thats i dont need, tried adding the commands at server.cfg, but server says "Unknown Command"? what did i wrong?