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You are here: Certification > The Open Brand > Register of Open Branded Products > List of Product Standards > Commands and Utilities

Commands and Utilities

Category: Operating System Services [CU]

This Product Standard provides a command interface to a range of system utilities. Two specifications are applicable: the Historic Compatibility specification which is Commands and Utilities Issue 3 (referenced in XPG3), and the POSIX Compatibility specification which is Commands and Utilities Issue 4, Version 2 and is aligned with ISO/IEC 9945:2:1993 (POSIX-2).

Product Standards are explained in Practical Guide to the Open Brand

Click for a Web version of the Product Standard

Click for full text of the Product Standard Definition: in PDF Format

Referenced Documents:

System Interfaces and Headers, Issue 4, Version 2

System Interface Definitions, Issue 4, Version 2

Supplementary Definitions, Issue 3

Commands and Utilities, Issue 3

ISO/IEC 9945-2:1993 (POSIX-2)

Conformance Statement Questionnaires:

CSQ for Commands and Utilities Product Standard

Test Suites:


Present in Base, UNIX 93 Product Standard(s)

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