GalacticFactory-Legacy/docs/installing-the-modpack/unsup/servers/servers.md

Installing the Modpack on Servers

First, move the unsup_setup script to your server's root folder (the folder that has your server .jar) and run it, then add the following to your unix_args.txt file.

-javaagent:unsup.jar

You'll also want to add the following line to your unsup.ini file, under preset=minecraft.

no_gui=true

After this, I recommend following the post-install guide.