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Practical UNIX by Steve Moritsugu - DTR Business Systems

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The Diversity of UNIX

As computer vendors ported UNIX to their own machines, they often gave it a unique name. The following section provides a partial list, in no special order, of some computer companies that sell UNIX systems.

Types of UNIX Systems

Table 1.1 shows companies that have ported UNIX and the various names they have given their versions of UNIX.

Table 1.1. Companies That Have Created Versions of UNIX and UNIX-like Systems
Computer CompanyUNIX OS
AT&TUNIX SVR3
AT&TUNIX SVR4
Sun Microsystems/SunSoftSunOS (which is a component of Solaris)
Sun Microsystems/SunSoftInteractive UNIX
Hewlett-Packard (HP)HP-UX
Data General (DG)DG-UX
NovellUnixWare (early version)
Santa Cruz Operation (SCO)UnixWare
Santa Cruz Operation (SCO)OpenServer
Santa Cruz Operation ...

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