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The Single UNIX Specification, Version 4

XBD Contents
XSH Contents
XCU Contents
XRAT Contents
XCURSES Contents
The Austin Group
ISO/IEC 9945
IEEE Std 1003.1
The Authorized Guide Book
Interface Counts

Read/Download IEEE Std 1003.1, 2018 Edition , Single UNIX Specification Version 4

The Single UNIX Specification Version 4 - incorporating IEEE Std 1003.1 and ISO/IEC 9945 and integrating the industry's Open Systems standards.
ISO/IEC 9945:2009
IEEE Std 1003.1, 2017 Edition
The Austin Group
Contents Organization of the Specification
Download a pdf copy of the Base Specifications (Members only)
Download a copy of X/Open Curses Issue 7(free pdf, registration required)
How many interfaces are there?
Download the Authorized Guide to the Single UNIX Specification Version 4 (free pdf, registration required).
Extracts from the Authorized Guide:
Read the online Single UNIX specification Version 4
Certification Standard: UNIX V7:Read the Standard




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