This form contains a series of questions that need to be answered. As you go about answering the questions, please keep the following things in mind:While it is not required that each question be answered at this time, all questions must have answers before the response is submitted to The Open Group for review and publication.Press the "Save" button at any time to save work in progress. Once the work has been saved, there is the option to continue editing if required.Many questions have instructions to assist in development of answers. They are marked with the indicator. Please look at the instructions carefully.Although HTML markup can be included in answers, this is not recommended apart from basic tags such as <p> and <br>, since incorrect markup could effect the format of other items in the document.Questions on this system should be addressed to the Conformance Statement manager at The Open Group.
Enter the name of the Organization that produced the implementation and the name of the author of the Conformance Statement.
A product may be registered in all members of a binary-compatible family of products on the basis of a single test report.
Answer the questions for each binary-compatible family. Alternately, provide the answers in the Appendix at the end of this document.
Question 1: Which of the following feature groups are supported by the implementation?
Response
Conformance to this Product Standard does not require extensions to the cc and c89 commands identified by the UNIX Extension feature group to be supported. However, support of this extended functionality is required for conformance to the UNIX Product Standard.
Rationale
Support for the UNIX Extension is not required for conformance to this Product Standard.
Reference
Commands and Utilities V2 Product Standard Definition.
UNIX Product Standard Definition.
Question 2: Which of the following options, specified in the <unistd.h> header, are available on the system?
For an Commands and Utilities V2 conformant implementation, _POSIX2_C_BIND, _POSIX2_CHAR_TERM, _POSIX2_LOCALDEF and _POSIX2_UPE must be supported. The other constants identify optional functionality that an implementation may or may not choose to support.
CAE Specification, System Interfaces and Headers, Issue 4, Version 2, Chapter 4, Headers, <unistd.h>.
Question 3: Which of the Software development utilities are not provided with the implementation?
All development utilities are provided. None of the development utilities are provided. All the development utilities except dis are provided.
The development utilities are required to exist on designated DEVELOPMENT systems but may not be present on all XSI-conformant systems. The dis utility is defined as optional and need not be present even on systems that support the remainder of the development utilities.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Section 1.3.1, Optional, and Section 1.3.2, Development.
Question 4: Is the FORTRAN fort77 utility provided?
Yes No
The fort77 utility is the command level interface to the FORTRAN compiler, which need not be provided.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Section 1.3.3, FORTRAN.
Question 5: Which of the following utilities and utility options are not supported on the implementation?
A number of utilities and utility options are marked as possibly unsupportable features, and the functionality associated with these need not be present in a conforming implementation.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Section 1.7, Portability.
Question 6: How does the at command interpret a non-null SHELL environment variable?
Uses the shell specified in the SHELL environment variable. Uses the login shell from the user database. Uses sh irrespective of the setting of SHELL.
The interpretation of the SHELL environment variable can cause at to invoke different versions of the shell on some implementations.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, at, ENVIRONMENT VARIABLES, SHELL.
Question 7: What is the limit on the number of open streams provided by awk?
open streams.
The number of open streams that are available to awk may differ between implementations, possibly depending on the number of streams that are available to a process ({FOPEN_MAX}).
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, awk, Input/Output and General Functions, close(\|).
Question 8: How does the batch command interpret a non-null SHELL environment variable?
The interpretation of the SHELL environment variable can cause batch to invoke different versions of the shell on some implementations.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, batch, ENVIRONMENT VARIABLES, SHELL.
Question 9: Which defined names are automatically provided by the compiler?
Provide a list of macro names built into the compiler or a reference to the appropriate system documentation.
The automatic provision of defined names by the compiler can cause these names to be unavailable in the name space for defined names.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, c89, OPTIONS, -D.
Question 10: When multiple input files are specified, where does c89 direct identification messages designating the start of each input file processing?
Standard output. Standard error. These messages are not generated.
These messages, if produced, must be written to one or the other of standard output and standard error, but not to both. The destination of these messages is useful in determining redirections that are necessary to identify the input files from which warning messages are generated.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, c89, STDOUT and STDERR.
Question 11: What are the limits associated with external symbols imposed by c89?
These limits vary between implementations and cannot be reset by the user. The XCU definition gives the minimum maximum value for each of the values. Some applications may require larger limits than these minimum maxima.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, c89, EXTENDED DESCRIPTION, External Symbols.
Question 12: Is the submitter of an lp job notified when the job is cancelled by someone else?
It is useful for the submitter of a job to be notified of its cancellation, rather than having to interrogate the line printer queue to obtain this information.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, cancel.
Question 13: What is the affect of alternate access control mechanisms on file copies?
If the implementation has an alternate access control mechanism, describe the effect of the controls on file copying or an indication of where these controls are documented.
Because of the additional restrictions on creating files and reading data from files, the cp utility may not behave as described when alternate access control mechanisms are in use.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, cp, DESCRIPTION (final paragraph).
Question 14: Does date permit the setting of the date and time?
Some systems, particularly those that are hosted as part of a total system environment, do not allow the date command to set the date. On such systems, the setting of the date can only be accomplished from the host environment.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, date, OPERANDS, mmddhhmm[yy].
Question 15: What restrictions are imposed on the set of commands within the rhs of the map command?
Provide a list of restrictions, if any, in the space below. Alternately, a reference to the system documentation where these restrictions are described is acceptable.
Implementations may impose restrictions on the commands that can be used by macros in visual mode.
CAE Specifications, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, ex, EXTENDED DESCRIPTION, Command Descriptions in ex, Map.
Question 16: Is the history list mechanism disabled for users with appropriate privileges who do not set HISTFILE?
The specification states that an implementation may, in certain circumstances, disable the history list mechanism for users with appropriate privileges who do not set HISTFILE. This could have some security implications.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, fc, ENVIRONMENT VARIABLES, HISTFILE.
Question 17: When multiple input files are specified, where does fort77 direct identification messages designating the start of each input file processing?
Standard output. Standard error. These messages are not generated. Not applicable.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, fort77, STDERR.
Question 18: What are the limits associated with external symbols imposed by fort77?
These limits vary between implementations and cannot be reset by the user. The specification gives the minimum maximum value for each of the values. Some applications may require larger limits than these minimum maxima.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, fort77, EXTENDED DESCRIPTION, External Symbols.
Question 19: Where are error messages sent when the lex -t option is not specified?
Standard output. Standard error. Not applicable.
These messages can be directed to either standard output or standard error, though the messages are not allowed to be directed to both. An application may wish to redirect these messages to a file.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, lex, STDOUT.
Question 20: Can ln create links to a directory?
Implementations may disallow the creation of hard links to a directory, even though the executing process has the appropriate privileges.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, ln, OPERANDS, source_file.
Question 21: What is the default character mapping used when the localedef -f option is not specified?
Either enter the name of the default character mapping used by localedef, or alternatively provide a reference to your system documentation where this character mapping file is described.
The specification does not define a specific character mapping as the default for conforming systems. This character mapping provides encoding information for the members of the portable character set.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, localedef, OPTIONS, -f.
Question 22: What lp option or operator command is used to suppress the printing of a banner page?
The user may require that banner pages are suppressed in cases where pre-printed forms are used and the stationary is of a non-standard length.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, lp, DESCRIPTION.
Question 23: How many bytes are in a block as reported by ls?
The block size used by ls to report the number of blocks occupied by a file varies from system to system; often this depends on the underlying file system architecture.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, ls, OPTIONS, -s.
Question 24: What additional variables does make add to its environment?
If additional variables are provided by make enter a list of these variables; alternatively provide a reference to the system documentation where such a list can be found. If no additional variables are provided, enter "None".
The implementation of make may set certain environment variables on invocation of make. These variables may not be set by the user, thus reducing the name space for environment variables.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, make, EXTENDED DESCRIPTION, Makefile Execution.
Question 25: Does the default MAKEFLAGS environment variable contain additional implementation-dependent options?
If additional options are provided in MAKEFLAGS enter a list of these options; alternatively provide a reference to the system documentation where such a list can be found. If no additional options are provided, enter "None".
The implementation of make may set certain default MAKEFLAGS options on invocation of make. These variables are in addition to those set by the user on the command line and could affect the processing of make.
Question 26: Does newgrp allow users who are not listed as a member of a group which has no password to change to that group?
On some implementations, a user who is not listed as a member of a group may change to that group in the case that there is no password associated with the group.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, newgrp, DESCRIPTION.
Question 27: Are there any other implementation-specific authorisation restrictions that affect newgrp?
If additional authorisations are required, provide a list of these restrictions; alternatively provide a reference to the system documentation where such a list can be found. If there are no such authorisation restrictions, enter "None".
Some implementations may impose accounting or other restrictions that could cause newgrp to deny activity to a group member. For example, a resource quota system could be implemented on a group basis that would limit the ability to join a group until the resources were available to the group.
Question 28: What are the limits and default values used by nice and renice?
Each of these values differs between implementations and the range of values gives the user some control over the relative priority of processes.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, nice, DESCRIPTION.
Question 29: What is the default archive format used by pax?
If your default format is implementation-dependent, place a description of the format in the box below. Otherwise, enter "Extended tar." or "Extended cpio."
The implementation has the choice as to which format it shall use as the default when it is creating files. When it is reading an archive created in either extended tar or extended cpio format (or any other format that it understands), the pax utility will read the archive in the format as written.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, pax, DESCRIPTION.
Question 30: How does pax handle reading and writing of archives that span multiple files?
Provide a description of how pax reads and writes archives that exceed the size of the output/input media. Alternatively specify where it is documented.
In many cases pax will take actions, such as prompting the user for the device name to use for the next archive file, when the current archive file is full. There may be extensions to the syntax of pax which allow the user to specify the address to use to access subsequent files.
Question 31: How does pax handle invalid filenames when it is extracting files from an archive?
Provide a description of how pax handles invalid filenames on extraction, detailing the type of error message produced or the algorithm used to generate a filename. Alternatively specify where it is documented.
An implementation may either extract the data associated with these files into files named in an implementation-defined manner or may issue an error indicating that the file is being ignored. If pax extracts the file, it is necessary for the user either to be informed of the file that is used or to know the algorithm that pax uses in generating these filenames.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, pax, EXTENDED DESCRIPTION, The cpio Filename.
Question 32: Does printf support the e, E, f, g and G floating point conversion specifications?
The support of these conversions is optional.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, printf, EXAMPLES.
Question 33: Is the environment variable IFS ignored when the shell is invoked?
The specification allows that the sh command ignore the setting of the IFS environment variable on invocation. The setting of this variable has been used to breach security on systems which use the shell to interpret a call to the system() and execvp() interfaces.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, sh, ENVIRONMENT VARIABLES, IFS.
Question 34: What is the latest date after the Epoch that can be used by touch?
Because of the limitations on the storage of times in the stat structure associated with a file, there is a limitation on the valid dates that can be specified to touch. This is directly related to the value that can be stored in the integral type time_t.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, touch, OPTIONS, -t.
Question 35: What are the limits of yacc's internal tables?
These internal table sizes vary between implementations and cannot be reset by the user. The specification gives the minimum maximum value for each of the table values.
CAE Specification, Commands and Utilities, Issue 4, Version 2, Chapter 3, Utilities, yacc, EXTENDED DESCRIPTION, Limits.
Copyright © All rights reserved.