7 Answers Sorted by: 17 UNIX is Unix and Unix is unix. But unix may not be Unix and Unix is not always UNIX. UNIX in all caps refers to the Trademark of The Open Group Unix is the genericized trademark of UNIX-Like systems. unix is the common term for UNIX like system. Share Improve this answer Follow edited Oct 18, 2009 at 2:36
Jun 18, 2023 · The operating system installed on many servers and some workstations is Unix-like. But what does it mean to be like Unix? In this book, a Unix-like system is one that is similar to *BSD, GNU/Linux, Solaris, and the original Unix. Today, Mac OS X also qualifies as a Unix-like system.
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.
Linux or GNU/Linux is a Unix-like operating system (or family of) for computers. The Linux kernel (the basis of the operating system) is free software, meaning people can use it, see how it works, change it, or share it. There is a lot of software for Linux and—like Linux itself—a lot of the software for Linux is free software.
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. Comparison of operating systems; The Unix Heritage Society; History of the Berkeley Software Distribution; List of Unix systems
Jan 24, 2015 · I believe the answer lies in how you define "Unix-like". As per the wikipedia entry for "Unix-like", there doesn't seem to be a standard definition. 1 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, while not necessarily conforming to or being certified to any ...
Linux is one of these systems with many of the Unix ideas in it. Linux does not use code from UNIX. Linux only shares some of the ideas and the names of commands. So, Linux is not a UNIX operating system. Instead it is called "Unix-like". There can be many different users in a Unix and Unix-like operating system.