System V Interface Definition (SVID)

The System V Interface Definition (SVID) is a set of standards established for Unix-like operating systems, particularly those based on the System V variant of Unix. It outlines how different operating system components, like processes and files, should interact. By providing a cohesive framework, SVID helps ensure that software developed on one System V-based system can run on another without major changes. This promotes compatibility and consistency across different Unix systems, making it easier for developers to create applications that work reliably across multiple environments.