Via FTP you can create a 'serverauto.cfg' in the /server/experimental/cfg/ directory.
In there you can set your description, seed, etc.
Each would have to be on it's own new line as so:
server.description 'My Awesome Rust Server'
Awesome, thanks! They kind of worked. I actually had to make a "server.cfg" file and place it in /server/experimental/cfg/ directory, because "server.writecfg" in Rusty deletes the modifications that I made to the original file (serverauto.cfg). It looks like everything is working the way I did it as well. Description, Image, PVE true and rcon.web 0 is also working. I did not add the server.worldsize and server.seed codes into the file because I change it every month and also the control panel requires a value.
Is there a list of all the other codes into the server.cfg file? Thus far I have added the decay.scale 0.2 and heli.lifetimeminutes 10. I was wondering if there is a way I can alter env.daylength from 45 to 50/55 and env.nightlength 10/5, but they don't seem to work?