Unix

+

+Unix is a family of [operating systems](/wiki/operating_system) developed in the 1970s at [Bell Labs](/wiki/Bell_Labs) by [Ken Thompson](/wiki/Ken_Thompson), [Dennis Ritchie](/wiki/Dennis_Ritchie), and others. Known for its modular design and command-line interface, it profoundly influenced software development and the architecture of modern [computer systems](/wiki/computer_system).

+Initially written largely in [assembly language](/wiki/assembly_language), it was famously rewritten in the [C programming language](/wiki/C) in the early 1970s, making it highly portable across different hardware platforms. Key design principles include a hierarchical [file system](/wiki/file_system), treating everything as a file, and a "toolkit philosophy" where small, simple utilities can be combined using [pipes](/wiki/pipe) and [redirection](/wiki/redirection).

+Its influence is pervasive, inspiring the development of many other operating systems like [Linux](/wiki/Linux) and [macOS](/wiki/macOS), and leading to the [POSIX](/wiki/POSIX) standard, which defines a set of application programming interfaces (APIs) for software compatibility across Unix-like systems.

+- [Command Line](/wiki/command_line)

+Unix is a family of [operating systems](/wiki/operating-system) developed in the 1970s. Known for its modular design and command-line interface, it profoundly influenced software development and the architecture of modern [computer systems](/wiki/computer-system).

+## See also

+- [Linux](/wiki/linux)

+- [Kernel](/wiki/kernel)

+- [Command Line](/wiki/command-line)