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ISO/IEC 9945

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ISO/IEC 9945
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ISO/IEC 9945-2003

The core of the Single UNIX Specification, Version 3 is also ISO/IEC 9945:2003. ISO/IEC 9945:2003 is the latest edition of ISO/IEC 9945 and incorporates the former ISO/IEC 9945-1:1996 (POSIX.1), and ISO/IEC 9945-2:1993 (POSIX.2) plus subsequent IEEE amendments, combined with the core volumes of the Single UNIX Specification, Version 2. It is technically identical to The Open Group, Base Specifications, Issue 6 and IEEE Std 1003.1, 2003 edition; they are one and the same documents, the front cover having all the designations. It was published on August 18 2003.

ISO/IEC 9945 consists of the following parts, under the general title Information technology Portable Operating System Interface (POSIX® ):

Part 1: Base Definitions
Part 2: System Interfaces
Part 3: Shell and Utilities
Part 4: Rationale

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