X/Open Portability Guide
From Wikipedia, the free encyclopedia
The X/Open Portability Guide is a standard for Unix-like systems published by the X/Open Company. It is more general than POSIX.
X/Open owns the Unix trademark, and the Portability Guide specifies the requirements for systems which are intended to be a Unix system, or Common Application Environment (CAE). The XPG3 and XPG4 standards, released on 1989 and 1992 respectively, define all aspects of the operating system, programming languages and protocols which compliant systems should have.
The last version of the XPG, the X/Open Portability Guide Issue 4 (also known as the Common Applications Environment Specification Issue 4 (CAE4)), was published in July 1992 by The Open Group. The Single UNIX Specification was based on the XPG4 standard.
[edit] Chapters
The XPG4 specification includes these chapters:
- System Interfaces and Headers (XSH), Issue 4, ISBN 1-872630-47-2 , C202
- Commands and Utilities (XCU), Issue 4, ISBN 1-872630-48-0 , C203
- System Interface Definitions (XBD), Issue 4, ISBN 1-872630-46-4 , C204
[edit] External links
- Solaris 2.5 Standards Conformance Guide
- The OpenGroup, formerly known as X/Open Company
- A History of Unix
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