The Open Group Library

UNIX® 03

UNIX® 03

Reference: X03XY


Availability: Available to download

UNIX 03 is the mark for systems that a vendor guarantees as conforming to Version 3 of the Single UNIX Specification.


This Product Standard is an enhanced version of the UNIX 98 Product Standard. It is aligned with the Single UNIX Specification, Version 3, which aligns with ISO/IEC 9899:1999 (ISO C 99), IEEE Std 1003.1, 2003 Edition, and ISO/IEC 9945:2003. For more detail, refer to the UNIX system website.

Additional Information

Additional Information

Reference X03XY
Published 15 Apr 2003
Pages 6
Type Certification Product Standards
Subject Single UNIX Specification
Standards Information

Standards Information Base

Common Name UNIX 03
Status Adopted
Service Category Operating System Services
Service Kernel Operations
Type The Open Group Product Standard