本文遵循CPL协议，可以免费自由使用，但不得去掉作者信息。
作者: ablo
主页：http://blog.csdn.net/ablo_zhou
Email:ablozhou at gmail.com
日期：2007.7.4 0:54

很多人听说了POSIX标准，但标准具体长什么样，在哪里下载到，则 不清楚。现在我开放出来，供相关人员使用。

Single UNIX Specification V3，IEEE Std 1003.1,2004 Edition

标准线上地址：
http://www.unix.org/version3/online.html
注册后可以在线阅读或者下载。

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如不能下载，可以通过subversion，到我的hanos开源操作系统的资料里面下载。
地址：
http://gforge.osdn.net.cn/projects/hanos/
该项目的SVN可以通过如下指令进行匿名checke out
svn checkout http://gforge.osdn.net.cn/svn/hanos/reference/book/posix

或通过subversion客户端，在地址栏输入
http://gforge.osdn.net.cn/svn/hanos/reference/book/posix
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IEEE和Open Group 的POSIX认证：
http://www.opengroup.org/certification/idx/posix.html

相关页面：
http://www.unix.org/version3/ieee_std.html

标准说明：
IEEE Std 1003.1,2004 Edition
The core of the Single UNIX Specification, Version 3 is also IEEE Std 1003.1. The latest 2004 edition incorporates IEEE Std 1003.1-2001 and two technical corrigendum. IEEE Std 1003.1-2001 is a major revision and incorporates IEEE Std 1003.1-1990 (POSIX.1) and its subsequent amendments, and IEEE Std 1003.2-1992 (POSIX.2) and its subsequent 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; they are one and the same documents, the front cover having both designations. The final draft achieved 98% approval by the IEEE ballot group and was officially approved by the IEEE-SA Standards Board on December 6th 2001.

During 2002, Technical Corrigendum 1 was developed. It was approved by the IEEE-SA Standards Board on December 11th 2002. In 2004 , IEEE Std 1003.1-2001/Cor 2-2004 was approved, and IEEE Std 1003.1 is officially designated as including IEEE Std 1003.1-2001, IEEE Std 1003.1-2001/Cor 1-2002. and IEEE Std 1003.1-2001/Cor 2-2004.