Remote GUI Control
With the increase in the prevalence and importance of GUI methods of using a computer, it is important that remote login procedures enable GUI access. Two methods are in common use to allow such access:
The X Window System (or X for short) was designed from the ground up as a networked GUI. This fact means you can use X programs remotely with very little additional effort—provided you have appropriate software on two computers.
The Virtual Network Computing (VNC) program provides an alternative to X that works across more platforms than does X. It works in a substantially different way than does X, but the user experience can be similar.
X is useful mainly for running programs on UNIX OSs, although you can use a non-UNIX OS ...
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