POSIXrajapinnat

POSIXrajapinnat is a programming interface that provides a standardized way for software to interact with the operating system. It is based on the POSIX (Portable Operating System Interface) standard, which was developed to ensure compatibility between different Unix-like operating systems. The term "rajapinnat" is a transliteration of the Finnish word for "interface," reflecting the origin of the standard.

The POSIX standard defines a set of APIs (Application Programming Interfaces) for various system services, including file I/O, process control, and inter-process communication. These APIs are designed to be portable, meaning that software written using POSIX can be compiled and run on any system that supports the standard, without modification.

POSIXrajapinnat is widely used in the development of Unix-like operating systems, such as Linux and macOS, as well as in embedded systems and other environments where portability and standardization are important. It is also used in the development of cross-platform software, such as compilers and development tools, that need to run on multiple operating systems.

The standard is maintained by The Open Group, a consortium of vendors and users of Unix-like operating systems. The latest version of the standard, POSIX.1-2017, was published in 2017 and includes updates and new features to support modern computing environments.