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System V IPC.
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   These facilities are provided to maintain compatibility with
programs developed on system V unix systems and others that rely on
these system V mechanisms to accomplish inter process communication
(IPC).

   The specifics described here are applicable to the Linux
implementation.  Other implementations may do things slightly
differently.

Overview

What is system V ipc? Overall mechanisms.

Messages

System calls for message passing.

Semaphores

System calls for semaphores.

Shared Memory

System calls for shared memory access.

Notes

Miscellaneous notes.