Xenix

Xenix
Xenix under Bochs
DeveloperMicrosoft, SCO, HCR, Logica
OS familyUnix (SysV)
Working stateHistoric
Source modelClosed source
Initial release1980 (1980)
Latest releaseSystem V Release 2.3.4 / 1991 (1991)
PlatformsPC/XT, x86, PDP-11, Z8001, 68k
Kernel typeMonolithic kernel
Default
user interface
Command-line interface
LicenseProprietary
Succeeded bySCO UNIX, OS/2

Xenix is a discontinued version of the Unix operating system for various microcomputer platforms, licensed by Microsoft from AT&T Corporation in the late 1970s. The Santa Cruz Operation (SCO) later acquired exclusive rights to the software, and eventually replaced it with SCO UNIX (now known as SCO OpenServer).

In the mid-to-late 1980s, Xenix was the most common Unix variant, measured according to the number of machines on which it was installed.[1][2] Microsoft chairman Bill Gates said at Unix Expo in 1996 that, for a long time, Microsoft had the highest-volume AT&T Unix license.[3]

  1. ^ Kelleher, Joanne (1986-02-03). "Corporate Unix: A system struggles to earn its stripes". Computerworld. p. 44.
  2. ^ Leffler, Samuel J.; McKusick, Marshall Kirk; Karels, Michael J.; Quarterman, John S. (October 1989). The Design and Implementation of the 4.3BSD UNIX Operating System. Addison-Wesley. p. 7. ISBN 0-201-06196-1.
  3. ^ "UNIX Expo — Remarks by Bill Gates". Microsoft. 1996-10-09. Archived from the original on 2001-08-18. Retrieved 2013-09-09.

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