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Chapter 1. Introducing Windows XP Profes... > How Does Windows XP Professional Com...

How Does Windows XP Professional Compare to UNIX and Linux?

Windows XP's kernel, like Windows 2000's, has its roots in UNIX. UNIX is a very popular multitasking operating system developed at Bell Labs in the early 1970s. It was designed by programmers for programmers. In fact, the language C was developed just to write UNIX. Even though UNIX has become a friendlier operating system with the addition of Windows-like interfaces such as MOTIF, it's still relatively user-unfriendly, requiring cryptic commands much like DOS.

UNIX

Because it is written in C, UNIX can run on any computer that has a C compiler, making it quite portable. AT&T gave away the UNIX source code to universities and licensed it to several companies during its early years. AT&T no longer owns UNIX; the UNIX trademark is now owned by OpenGroup, though the source code is claimed to be owned by the Santa Cruz Operation (SCO), though this is now in debate.


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