How is UNIX and UNIX

Unix: the operating system that set new standards

In the following years, more and more modifications should see the light of day, whereby more and more financial aspects should also play a role. Microsoft acquired a Unix V7 license as early as 1979 to, among other things. Develop ports for Intel and Motorola processors. The following year the software company released Xenix, which was planned as the standard operating system for PCs, but placed too high demands on the hardware. Microsoft finally handed the further development into the hands of the software manufacturer SCO (Santa Cruz Operation) in order to concentrate on OS / 2 and the further development of MS-DOS.

Bill Joy jumped on the bandwagon in 1982 with his newly founded company Sun Microsystems, with the proprietary, BSD based system SunOS (Predecessor of Solaris), which was specially planned for use on servers and workstations.

The real battle for the favor of the Unix followers, however, flared up between AT&T, which had meanwhile received the permission for the commercial distribution, and the Berkeley University, which with BSD and the big one Number of supporting programmers could shine with valuable and innovative innovations. AT&T first tried to conquer the market with System III (1981) and in particular with the optimized System V (1983), both of which were based on Unix V7, while the University of Berkeley at the same time published 4.2BSD, for which more within 18 months than 1,000 licenses have been issued. This made it significantly more popular than the paid System V, which primarily includes the Fast File System (FFS) and the Network capability (thanks to integrated TCP / IP) of the Berkeley variant.

With the fourth release of System V (1988) AT&T implemented these two as well as numerous other features of BSD, but also of Xenix and SunOS, whereupon many users switched to the commercial solution.