Understanding the X Window System
The X Window System represents two primary concepts. The X Window System was
created to keep the UNIX kernel and GUI code separate. It was also designed for distributed
processing based on the client/server model. That is, with X, you don??™t need to have
a computer with massive amounts of hard drive space and RAM to run graphical applications.
A thin client with a connection to an X server is all you need. Nonetheless, if you
have the aforementioned massive hard drive and hundreds of megabytes of RAM, you can
host both the X server and many clients on your own machine.
The X server??™s primary job is to create and manage windows, dialog boxes, buttons, and
other graphical elements on a screen. That screen can be located practically anywhere in
the world, and perhaps even on a laptop on the International Space Station. X is
extremely portable, too. After you have configured X the way you (or your system administrators)
want it, you can take that configuration file with you and copy it into any other
X-capable machine and it will run the same way.
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