(If the -X option doesn't work try -Y.) For example:

You must specify the -X option to enable display forwarding. In xterm, connect to any Stanford timeshare using the ssh command.You may need to restart your computer after the installation of XQuartz, so try that if the following doesn't immediately work for you.If no terminal window opens, start one by selecting Terminal from the File menu or pressing COMMAND + N. Verify that XQuartz is installed and launch the XQuartz application (located in the Utilities subfolder of the Applications folder). An xterm window should open by default.You can download the XQuartz application at MacOSForge. XQuartz is a free X11 server implementation for OS X. Because secure connections are required in the Stanford timeshare environment, SSH must be used to encrypt the X-windows connection most SSH clients have built-in support for X display forwarding. X-windows is the native display technology on UNIX and Linux systems and is designed for networked use. X-windows (X11) is recommended for most users, but VNC is useful when certain applications fail to run properly under X-windows, or when a persistent connection to the remote display is required. See Using VNC for information about VNC. Two methods are currently supported: X-windows and VNC. UNIX/Linux applications with a graphical user-interface require the use of special display software when connecting from a remote location.

What is xquartz on mac