Provided by: manpages-posix_2013a-1_all 
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface
may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface
may not be implemented on Linux.
NAME
qhold — hold batch jobs
SYNOPSIS
qhold [−h hold_list] job_identifier...
DESCRIPTION
A hold is placed on a batch job by a request to the batch server that manages the batch job. A batch job
that has one or more holds is not eligible for execution. The qhold utility is a user-accessible client
of batch services that requests one or more types of hold to be placed on one or more batch jobs.
The qhold utility shall place holds on those batch jobs for which a batch job_identifier is presented to
the utility.
The qhold utility shall place holds on batch jobs in the order in which their batch job_identifiers are
presented to the utility. If the qhold utility fails to process any batch job_identifier successfully,
the utility shall proceed to process the remaining batch job_identifiers, if any.
The qhold utility shall place holds on each batch job by sending a Hold Job Request to the batch server
that manages the batch job.
The qhold utility shall not exit until holds have been placed on the batch job corresponding to each
successfully processed batch job_identifier.
OPTIONS
The qhold utility shall conform to the Base Definitions volume of POSIX.1‐2008, Section 12.2, Utility
Syntax Guidelines.
The following option shall be supported by the implementation:
−h hold_list
Define the types of holds to be placed on the batch job.
The qhold −h option shall accept a value for the hold_list option-argument that is a string of
alphanumeric characters in the portable character set (see the Base Definitions volume of
POSIX.1‐2008, Section 6.1, Portable Character Set).
The qhold utility shall accept a value for the hold_list option-argument that is a string of
one or more of the characters 'u', 's', or 'o', or the single character 'n'.
For each unique character in the hold_list option-argument, the qhold utility shall add a value
to the Hold_Types attribute of the batch job as follows, each representing a different hold
type:
u USER
s SYSTEM
o OPERATOR
If any of these characters are duplicated in the hold_list option-argument, the duplicates
shall be ignored.
An existing Hold_Types attribute can be cleared by the following hold type:
n NO_HOLD
The qhold utility shall consider it an error if any hold type other than 'n' is combined with
hold type 'n'.
Strictly conforming applications shall not repeat any of the characters 'u', 's', 'o', or 'n'
within the hold_list option-argument. The qhold utility shall permit the repetition of
characters, but shall not assign additional meaning to the repeated characters.
An implementation may define other hold types. The conformance document for an implementation
shall describe any additional hold types, how they are specified, their internal behavior, and
how they affect the behavior of the utility.
If the −h option is not presented to the qhold utility, the implementation shall set the
Hold_Types attribute to USER.
OPERANDS
The qhold utility shall accept one or more operands that conform to the syntax for a batch job_identifier
(see Section 3.3.1, Batch Job Identifier).
STDIN
Not used.
INPUT FILES
None.
ENVIRONMENT VARIABLES
The following environment variables shall affect the execution of qhold:
LANG Provide a default value for the internationalization variables that are unset or null. (See the
Base Definitions volume of POSIX.1‐2008, Section 8.2, Internationalization Variables the
precedence of internationalization variables used to determine the values of locale
categories.)
LC_ALL If set to a non-empty string value, override the values of all the other internationalization
variables.
LC_CTYPE Determine the locale for the interpretation of sequences of bytes of text data as characters
(for example, single-byte as opposed to multi-byte characters in arguments).
LC_MESSAGES
Determine the locale that should be used to affect the format and contents of diagnostic
messages written to standard error.
LOGNAME Determine the login name of the user.
ASYNCHRONOUS EVENTS
Default.
STDOUT
None.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
None.
EXIT STATUS
The following exit values shall be returned:
0 Successful completion.
>0 An error occurred.
CONSEQUENCES OF ERRORS
In addition to the default behavior, the qhold utility shall not be required to write a diagnostic
message to standard error when the error reply received from a batch server indicates that the batch
job_identifier does not exist on the server. Whether or not the qhold utility waits to output the
diagnostic message while attempting to locate the job on other servers is implementation-defined.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
None.
RATIONALE
The qhold utility allows users to place a hold on one or more jobs. A hold makes a batch job ineligible
for execution.
The qhold utility has options that allow the user to specify the type of hold. Should the user wish to
place a hold on a set of jobs that meet a selection criteria, such a list of jobs can be acquired using
the qselect utility.
The −h option allows the user to specify the type of hold that is to be placed on the job. This option
allows for USER, SYSTEM, OPERATOR, and implementation-defined hold types. The USER and OPERATOR holds are
distinct. The batch server that manages the batch job will verify that the user is authorized to set the
specified hold for the batch job.
Mail is not required on hold because the administrator has the tools and libraries to build this option
if he or she wishes.
Historically, the qhold utility has been a part of some existing batch systems, although it has not
traditionally been a part of the NQS.
FUTURE DIRECTIONS
The qhold utility may be removed in a future version.
SEE ALSO
Chapter 3, Batch Environment Services, qselect
The Base Definitions volume of POSIX.1‐2008, Section 6.1, Portable Character Set, Chapter 8, Environment
Variables, Section 12.2, Utility Syntax Guidelines
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc
and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event
of any discrepancy between this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at
http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are most likely to have been introduced
during the conversion of the source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .