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