Basic Terminology in Z/OS Unix Services

USS         – z/OS UNIX System Services „

Process    – program using UNIX system services „

Thread  – a unit (task) of work in a process „

Dub        – establish a z/OS UNIX environment for an address space z create process „

Fork/Spawn – methods by which a parent process creates a child process „

Syscall / System Call / Callable Service z a request by an active process for a service to be performed by z/OS UNIX System Services „

Zombie – address space with OMVS resources remaining after dubbed process terminates