Do you mean make yourself admin?
I only ever worked on RSC never played the later versions, let alone manage a source.
In the RSC sources, you had to go to server side, player.java, and edit "rank=0" to "rank=5".
5 is admin status.
For a list of commands, just search "commandhandler.java" within the source. Thus, assuming those later versions were coded in a similar way to RSC.
Hope this helped..