Lexicon Entry
POSIX
A family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems. It defines a standard OS interface and environment, including command line shells and standard APIs.
Related Knowledge & Cross-References
Guide
POSIX Signal Handling: Asynchronous Contexts and Reentrancy
Unpacking asynchronous execution contexts, async-signal-safe functions, and the hidden dangers of reentrancy that make printf and malloc unsafe inside a signal handler.