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POSIX.1 – core services

POSIX.1 is the 1988 original standard, which was initially named POSIX but was renamed to make it possible to add more standards to the family without giving up the name. It defines the following features:

Process creation and control
Signals:
Floating point exceptions
Segmentation/memory violations
Illegal instructions
Bus errors
Timers
File and directory operations
Pipes
C library (standard C)
I/O port interface and control
Process triggers

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