UNIX Introduction  What is UNIX?  UNIX® License PlateUNIX is an
operating system which was first developed in the 1960s, and has
been under constant development ever since. By operating system,
we mean the suite of programs which make the computer work. It
is a stable, multi-user, multi-tasking system for servers,
desktops and laptops.  UNIX systems also have a graphical user
interface (GUI) similar to Microsoft Windows which provides an
easy to use environment. However, knowledge of UNIX is required
for operations which aren't covered by a graphical program, or
for when there is no windows interface available, for example,
in a telnet session.  Types of UNIX  The Linux PenguinThere are
many different versions of UNIX, although they share common
similarities. The most popular varieties of UNIX are Sun
Solaris, GNU/Linux, and MacOS X.  Here in the School, we use
Solaris on our servers and workstations, and Fedora Linux on the
servers and desktop PCs.  The UNIX operating system  The UNIX
operating system is mad