Using X-windows (X11) and secure shell (SSH) to connect to a remote UNIX server (host)

X-windows (X11) and SSH software let you run certain types of software on a remote UNIX server (host) while displaying and controlling the software's graphical user interface (GUI) on your local desktop system. In a cluster computing environment, X11 and SSH are typically used to connect to the cluster's head node as illustrated below.
cluster computing environment

Follow the instructions for your operating system on your computer:

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