The two most important settings are PATH and DISPLAY. You'll need to add
:/usr/X11R6/bin to your PATH variable, and will need to create a new shell variable, DISPLAY, and set it to
In bash, you'd do this:
If you're using tcsh, you'd do:
Be sure to replace username in the above examples with your own username.
Now, after launching X11, you should be able to run commands from the Terminal window instead.