| Product Standard |
|---|
| Operating System and Languages: Commands and Utilities |
| Document Number: X98CU |
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Commands and Utilities
No label.
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 31 (referenced in XPG3), and the POSIX Compatibility specification which is Commands and Utilities, Issue 4, Version 22 and is aligned with ISO/IEC 9945-2:1993 (POSIX-2).3 See Migration below.
For a product to conform to this Product Standard, the differences between product behavior and either the Historic Compatibility specification or the POSIX Compatibility specification must be documented in the Conformance Statement. There are no other conformance requirements.
For the Historic Compatibility specification: refer to Commands and Utilities, Issue 3, command line syntax.
For the POSIX Compatibility specification:
refer to Commands and Utilities, Issue 4, Version 2, command line syntax, and
System Interface Definitions, Issue 4, Version 24, Glyphs contained in Table 4-1, Portable Character Set.
For the Historic Compatibility specification: refer to Commands and Utilities, Issue 3, command line syntax.
For the POSIX Compatibility specification: refer to Commands and Utilities, Issue 4, Version 2 and System Interface Definitions, Issue 4, Version 2. Support for the X/Open_UNIX_EXTENSION Feature Group is not required.
For the Historic Compatibility specification: command language as defined in Commands and Utilities, Issue 3.
For the POSIX Compatibility specification: command language as defined in Commands and Utilities, Issue 4, Version 2.
For the Historic Compatibility specification: Supplementary Definitions, Issue 37, Section 18.4, cpio, and Section 18.5, tar (extended tar archive file formats).
For the POSIX Compatibility specification: Commands and Utilities, Issue 4, Version 2, cpio and extended tar archive file formats, pax utility.
None.
Not applicable.
XPG3 Internationalized System Calls and Libraries, or Internationalized System Calls and Libraries.
ISO/IEC 9945-2:1993 (POSIX-2).
None.
This Product Standard was introduced prior to ratification of IEEE Std. 1003.2-1992 to provide an early Commands and Utilities Product Standard. It allows products to be registered as conformant at any stage in the transition path between the XPG3 Commands and Utilities Product Standard and the IEEE standard. The Conformance Statement of a registered product must identify in detail where the product is in the transition path, and it must do this by documenting differences either from the Historic Compatibility specification or from the POSIX Compatibility specification. The latter was based on Draft 11.2 of the IEEE document, but the later ratified IEEE Std. 1003.2-1992, which has now progressed to become ISO/IEC 9945-2:1993 (POSIX-2), is technically identical to Draft 11.2.
Migration issues from a product registered as conformant to this Product Standard to one conformant to Commands and Utilities V2 are system-dependent but can be ascertained by reference to the product's Conformance Statement.
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