UNIX

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UNIX

Release Status	Maintained
Last Release	UNIX V7
Language(s)	C, Assembly
Developer(s)	Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna at Bell Labs
Website	opengroup.org

Unix is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969. Unix is recognised as the first portable operating system. Today UNIX isn't an operating system but rather a family of UNIX certified operating systems all following the Single UNIX Specification.

The owner of the UNIX® trademark has been The Open Group since 1994.

Examples of modern UNIX operating systems include Apple's MacOS and IBM AIX.

Being genetic UNIX® is not required for UNIX® certification. Formerly, Inspur K-UX was certified UNIX®, specifically versions 2.0 and 3.0. Inspur K-UX's UNIX® certification expired in February of 2019 and has yet to be renewed.