Linux Dedicated Server Mod Config Location

I've spent about the past 2 hours looking for where the mod configs are, and how to change them, couldn't find anything.

I am on a Linux dedicated server (headless), remote host, I own the server machine. trying to find out any where where I can configure mods. There is no 'ModConfigs' folder in /home/<user>/.local/share/Terraria/tModLoader, and I am not running it with Steam support.

I guess my question is, how in the world do I configure mods, and do I need to enable Steam in order to do this.
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