SEP 12.1.5 on non X-window linux machine

I have a linux server I have installed SEP 12.1.5 on as a mangaged client.  Its running fine and shows up in the SEPM console. However, I cannot figure out how to configure the LiveUpdate with out using the GUI tools.  This machine doesn't have X windows on it and I access it normally through SSH.  How can I configure the LiveUpdate settings such as proxy, LiveUpdate server, etc through the command line?