CPOSIX

CPOSIX is a term that refers to an implementation or adaptation of POSIX standards on a specific platform or operating system. POSIX, which stands for Portable Operating System Interface, is a family of standards developed by the IEEE Computer Society for maintaining compatibility between operating systems. It defines a standard application programming interface (API), along with hardware and software interfaces, for applications to be developed in a way that they can be ported from one POSIX-compliant system to another with minimal modification.

When a system is described as "CPOSIX compliant," it means that it adheres to these POSIX standards, allowing software written for one POSIX system to run on another. This promotes interoperability and portability of software. The specific "C" in CPOSIX might denote a particular context, such as a commercial implementation, a specific project, or a variation in how the POSIX standards are applied. Without further context, CPOSIX generally signifies a POSIX-compatible environment. This adherence typically covers aspects like file system structure, command-line utilities, and system calls. Many operating systems, including various Unix-like systems such as Linux and macOS, strive for POSIX compliance to ensure broad software compatibility.