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A Unix-like (sometimes referred to as UN*X or *nix) operating system is one that behaves in a manner similar to a Unix system, although not necessarily conforming to or being certified to any version of the Single UNIX Specification. A Unix-like application is one that behaves like the corresponding Unix command or shell.
Unix ( / ˈjuːnɪks /, YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 [1] at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. [4]
- Unix
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A Linux-based system is a modular Unix-like operating system, deriving much of its basic design from principles established in Unix during the 1970s and 1980s. Such a system uses a monolithic kernel , the Linux kernel, which handles process control, networking, access to the peripherals , and file systems .
- September 17, 1991; 32 years ago
- Unix-like
- Community contributors, Linus Torvalds
- Open source
List of Unix systems. Each version of the UNIX Time-Sharing System evolved from the version before, with version one evolving from the prototypal Unix. Not all variants and descendants are displayed. Historical flow chart of Unix and Unix-like variants.
Since the early 2000s, Linux is the leading Unix-like operating system, with other variants of Unix (apart from macOS) having only a negligible market share (see Usage share of operating systems). See also [ edit ]
- 1969; 54 years ago
- Unix
The POSIX specifications for Unix-like operating systems originally consisted of a single document for the core programming interface, but eventually grew to 19 separate documents (POSIX.1, POSIX.2, etc.).
Contents. hide. (Top) Principles. File types. Conventional directory layout. See also. References. Unix filesystem. Version 7 Unix filesystem layout: subdirectories of "/" and "/usr" An overview of a Unix filesystem layout. In Unix and operating systems inspired by it, the file system is considered a central component of the operating system. [1] .
