How to use X forwarding to run GUI apps over SSH

If you know how to use SSH, you probably used it to connect to the command prompt on a remote computer. But did you know that SSH can open remote GUI applications on your desktop using a process known as X forwarding?

Sometimes we need to run a GUI application on a remote computer. We could use VNC which would send the entire desktop over a network connection. Or we could just forward the application using X forwarding, which redirects the display from the remote machine to an X server on our machine via SSH. This brings the remote application to our working desktop instead of being trapped in a VNC window.

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