Abstract
- Stands for Portable Operating System Interface
- A set of standards enforced by IEEE, specifying the interface between OS and OS System Program
- Implements a set of automated conformance test to check if an OS is POSIX-compatible
- Defines Standard C operations, Multi-tasking and commands etc
- Has about 100 Library Call, but not one-to-one mapping to System Call (系统调用). Below is a list of major POSIX system calls
