Ho To X11

**Note to students: You must connect to the learnfmri.ucsd.edu server through UCSD VPN.

The VPN Client can be downloaded at http://vpn.ucsd.edu/

wikipedia.org definition of X11:

In computing, the X Window System (commonly X11 or X) is a windowing system for bitmap displays. It provides the standard toolkit and protocol to build graphical user interfaces on Unix, Unix-like operating systems, and OpenVMS; and almost all modern operating systems support it.

X provides the basic framework for a GUI environment: drawing and moving windows on the screen and interacting with a mouse and keyboard. X does not mandate the user interface — individual client programs handle this. As such, the visual styling of X-based environments varies greatly; different programs may present radically different interfaces.

X11 for Mac:

Requirements: must have XQuartz installed

More information can be found at:


1. Open the XQuartz program.
2. Open a terminal
3. In a terminal type ‘ssh –Y <your user name>@learnfmri.ucsd.edu’

X11 for Linux:

X11 support is built-in to the operating system.

1. Open a terminal
2. In a terminal type ‘ssh –Y <your user name>@learnfmri.ucsd.edu’
3. If the above line doesn't work use -X instead of -Y

X11 for Windows:

Option 1:

Use Mobaxterm, it can be downloaded from:


    1. Upon starting MobaXterm, you are immediately enter into a command shell.
    2. To login, type: ssh username@learnfmri.ucsd.edu
      • Where username is your onyx login username.
    3. Enter your password when prompted.


Option 2:

Use Xming for X11 server and use PuTTY for ssh terminal

Both of these can be downloaded from



1. Install Xming and PuTTY
2. Load Xming
3. Start PuTTY
4. Put learnfmri.ucsd.edu in the host name box
5. In the category list click on SSH>X11
6. Check the “Enable X11 forwarding box
7. Click on Open
8. On the Putty Security Alert popup click on “Yes”
9. Type in your username at the prompt
10. Type in your password in the password prompt

Other SSH Clients:





Last modified September 17, 2014
Produced by the Center for Functional MRI.
Copyright 2009 CFMRI. All rights reserved.