How to handle remote X-windows in SEAS, GWU.

* Use felix.seas.gwu.edu as the remote machine.

* In this example below, I'll assume parrot.seas.gwu.edu is the
  local machine.

* First, you will need two command-tool (or shell-tool, or xterm)
  windows. Bring those up now.

* In one of them, type:
    parrot% xhost +localhost
  You should get
    localhost being added to access control list
  as a message.

  Then type
    parrot% xfwd x
  You should get
     Checking connection to "localhost:0"
 
     Tell remote client to display to parrot.seas.gwu.edu:2
 
     If you haven't already, run 'xhost +localhost'
     [Proxy service is now running; press ^C to quit]

  This means that the X-window server on parrot.seas.gwu.edu
  is ready to receive Window commands from a remote machine.

  Also, this window will be useless since the xfwd command
  ties up the window (it waits). When you are done, type
  control-c in this window to kill xfwd.

* Next, in the OTHER window (command-tool, shell-tool or xterm),
  login into felix.seas.gwu.edu:
    parrot% telnet felix

* Now you need to tell the X-window server on felix that you want
  it to send its display stuff to parrot.seas.gwu.edu. Do this
  by typing the instructions given in the xfwd command above.

  NOTE: what you type in depends on which shell you are using.
  If you are using K-shell, type:
    felix% export DISPLAY=parrot.seas.gwu.edu:2
  If you are using tsch, type:
    felix% setenv DISPLAY parrot.seas.gwu.edu:2

* Now you can test whether it's working by firing up an application
  from felix.seas.gwu.edu, for example,
    felix% xterm &
  or 
    felix% xclock &

  If everything is working, you will be prompted with a small
  dialog box to see if you want to allow the window to be brought up.
  After clicking yes, you should see the window.

* Finally, you now are ready to fire up any Java application.
  When you are done, type control-c in the window in which you
  typed "xfwd".

* NOTE: 
    - Since telnet is allowed only into a few machines in SEAS,
      it's best to use felix as the remote machine.
    - If you have a Unix or Linux machine at home (or elsewhere),
      you should be able to do the same thing to allow a felix 
      window to come up at home.
    - If you want to fire up X-windows stuff on your PC at home,
      you will have to use software like Exceed (made by Hummingbird)
      that allows this to happen. Exceed is expensive, but I'm told
      there is freeware that does the same thing.

* If you cannot get anything working in this set of instructions,
  then please seek assistance from SEAS Computing.