Originally posted by ZeroGravitySE
Whats the command for running the server in the background?
Add a '&' to the end of your command
./jk2ded +exec server.cfg &
Once you do this, it will run the server and set you at a blank line beneath the initilization text as normal. Then, hit enter and it should bring you back to the command line.
Do a ps -ax and you should see the server humming along.