The Open Group Base Specifications Issue 7, 2018 edition
IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008)
Copyright © 2001-2018 IEEE and The Open Group


The following information is given for the convenience of users of POSIX.1-2017 and does not constitute an endorsement by the IEEE or The Open Group of these products. Equivalent products may be used if they can be shown to lead to the same results.

There may be other products mentioned in the text that might be covered by trademark protection and readers are advised to verify them independently.

AIX® and IBM® are registered trademarks of IBM Corporation.

ArchiMate®, DirectNet®, Making Standards Work®, OpenPegasus®, The Open Group®, TOGAF®, UNIX®, UNIXWARE®, X/Open®, and The Open Brand X® logo are registered trademarks and Boundaryless Information Flow™, Build with Integrity Buy with Confidence™, Dependability Through Assuredness™, FACE™ , the FACE™ logo, IT4IT™, the IT4IT™ logo, O-DEF™, Open FAIR™, Open Platform 3.0™, Open Trusted Technology Provider™, Platform 3.0™, the Open O™ logo, and The Open Group Certification logo (Open O and check™) are trademarks of The Open Group.

AT&T® is a registered trademark of AT&T in the USA and other countries.

BSD™ is a trademark of the University of California, Berkeley, USA.

Hewlett-Packard®, HP®, and HP-UX® are registered trademarks of Hewlett-Packard Company.

IEEE® is a registered trademark, and POSIX™, 754™, 854™, 1003.0™, 1003.1™, 1003.1d™, 1003.1g™, 1003.1j™, 1003.1q™, 1003.2™, 1003.2a™, 1003.2d™, 1003.9™, and 1003.13™ are trademarks of the Institute of Electrical and Electronic Engineers, Inc.

Linux® is a registered trademark of Linus Torvalds.

Sun® and Sun Microsystems® are registered trademarks of Oracle America, Inc.

/usr/group® is a registered trademark of UniForum, the International Network of UNIX System Users.

return to top of page

UNIX ® is a registered Trademark of The Open Group.
POSIX ™ is a Trademark of The IEEE.
Copyright © 2001-2018 IEEE and The Open Group, All Rights Reserved
[ Main Index | XBD | XCU | XSH | XRAT ]