POSIX

POSIX, which stands for Portable Operating System Interface, is a set of standardized rules and protocols that ensure different operating systems (like Linux, macOS, or Unix) can work together smoothly. Think of it as a common language that allows software and hardware components to communicate consistently across systems. This standardization helps developers write software that runs reliably on various systems without needing major changes, promoting compatibility, interoperability, and easier software development across different platforms.