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IEEE POSIX Base Specifications, Issue 7-1003.1- 2004-Edition
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POSIX操作系统标准
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IEEE Std 1003.1
™
-2008
(Revision of
IEEE Std 1003.1-2004)
Standard for Information Technology–
Portable Operating System Interface (POSIX
®
)
Base Specifications, Issue 7
IEEE
3 Park Avenue
New York, NY 10016-5997, USA
1 December 2008
IEEE Computer Society
Sponsored by the
Portable Applications Standards Committee
and
The Open Group
1003.1
TM
IEEE Std 1003.1
™
-2008
(Revision of
IEEE Std 1003.1-2004)
The Open Group Technical Standard
Base Specifications, Issue 7
Standard for Information Technology—
Portable Operating System Interface (POSIX
®
)
Base Specifications, Issue 7
Sponsor
Portable Applications Standards Committee
of the
IEEE Computer Society
and
The Open Group
Approved 26 September 2008
IEEE-SA Standards Board
Approved 24 July 2008
The Open Group
ii Copyright © 2001-2008, IEEE and The Open Group. All rights reserved. Base Specifications, Issue 7
Abstract
POSIX.1-2008 is simultaneously IEEE Std 1003.1
™
-2008 and The Open Group Technical Standard Base Specifications,
Issue 7.
POSIX.1-2008 defines a standard operating system interface and environment, including a command interpreter (or
“shell”), and common utility programs to support applications portability at the source code level. POSIX.1-2008 is
intended to be used by both application developers and system implementors and comprises four major components
(each in an associated volume):
• General terms, concepts, and interfaces common to all volumes of this standard, including utility conventions and
C-language header definitions, are included in the Base Definitions volume.
• Definitions for system service functions and subroutines, language-specific system services for the C
programming language, function issues, including portability, error handling, and error recovery, are included in
the System Interfaces volume.
• Definitions for a standard source code-level interface to command interpretation services (a “shell”) and common
utility programs for application programs are included in the Shell and Utilities volume.
• Extended rationale that did not fit well into the rest of the document structure, which contains historical
information concerning the contents of POSIX.1-2008 and why features were included or discarded by the
standard developers, is included in the Rationale (Informative) volume.
The following areas are outside the scope of POSIX.1-2008:
• Graphics interfaces
• Database management system interfaces
• Record I/O considerations
• Object or binary code portability
• System configuration and resource availability
POSIX.1-2008 describes the external characteristics and facilities that are of importance to application developers, rather
than the internal construction techniques employed to achieve these capabilities. Special emphasis is placed on those
functions and facilities that are needed in a wide variety of commercial applications.
Keywords
application program interface (API), argument, asynchronous, basic regular expression (BRE), batch job, batch system,
built-in utility, byte, child, command language interpreter, CPU, extended regular expression (ERE), FIFO, file access
control mechanism, input/output (I/O), job control, network, portable operating system interface (POSIX
®
), parent, shell,
stream, string, synchronous, system, thread, X/Open System Interface (XSI)
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
The Open Group
Thames Tower, Station Road, Reading, Berkshire, RG1 1LX, U.K.
Copyright © 2008 by the Institute of Electrical and Electronics Engineers, Inc. and The Open Group
All rights reserved.
Published 1 December 2008 by the IEEE. Printed in the United States of America by the IEEE.
PDF: ISBN 978-0-7381-5798-6 STD95820
CDROM: ISBN 978-0-7381-5799-3 STDCD95820
Published 1 December 2008 by The Open Group. Printed in the United Kingdom by The Open Group.
Doc. Number: C082
ISBN: 1-931624-79-8
No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the
publisher. Permission to reproduce all or any part of this standard must be with the consent of both copyright holders and may be subject to a license
fee. Both copyright holders will need to be satisfied that the other has granted permission. Requests should be sent by email to
austin-group-permissions@opengroup.org.
This standard has been prepared by the Austin Group. Feedback relating to the material contained within this standard may be submitted by using the
Austin Group web site at
www.opengroup.org/austin/de
fectform.html.
Base Specifications, Issue 7 Copyright © 2001-2008, IEEE and The Open Group. All rights reserved. iii
IEEE
IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating Committees of the
IEEE Standards Association (IEEE-SA) Standards Board. The IEEE develops its standards through a consensus
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A
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