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QDEL

Section: POSIX Programmer's Manual (1P)
Updated: 2013
Index Return to Main Contents
 

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

qdel --- delete batch jobs  

SYNOPSIS

qdel job_identifier...
 

DESCRIPTION

A batch job is deleted by sending a request to the batch server that manages the batch job. A batch job that has been deleted is no longer subject to management by batch services. The qdel utility is a user-accessible client of batch services that requests the deletion of one or more batch jobs. The qdel utility shall request a batch server to delete those batch jobs for which a batch job_identifier is presented to the utility. The qdel utility shall delete batch jobs in the order in which their batch job_identifiers are presented to the utility. If the qdel utility fails to process any batch job_identifier successfully, the utility shall proceed to process the remaining batch job_identifiers, if any. The qdel utility shall delete each batch job by sending a Delete Job Request to the batch server that manages the batch job. The qdel utility shall not exit until the batch job corresponding to each successfully processed batch job_identifier has been deleted.  

OPTIONS

None.  

OPERANDS

The qdel 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 qdel:
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

An implementation of the qdel utility may write informative messages to standard output.  

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 qdel 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 qdel 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 qdel utility allows users and administrators to delete jobs. The qdel utility provides functionality that is not otherwise available. For example, the kill utility of the operating system does not suffice. First, to use the kill utility, the user might have to log in on a remote node, because the kill utility does not operate across the network. Second, unlike qdel, kill cannot remove jobs from queues. Lastly, the arguments of the qdel utility are job identifiers rather than process identifiers, and so this utility can be passed the output of the qselect utility, thus providing users with a means of deleting a list of jobs. Because a set of jobs can be selected using the qselect utility, the qdel utility has not been complicated with options that provide for selection of jobs. Instead, the batch jobs to be deleted are identified individually by their job identifiers. Historically, the qdel utility has been a component of NQS, the existing practice on which it is based. However, the qdel utility defined in this volume of POSIX.1-2008 does not provide an option for specifying a signal number to send to the batch job prior to the killing of the process; that capability has been subsumed by the qsig utility. A discussion was held about the delays of networking and the possibility that the batch server may never respond, due to a down router, down batch server, or other network mishap. The DESCRIPTION records this under the words ``fails to process any job identifier''. In the broad sense, the network problem is also an error, which causes the failure to process the batch job identifier.  

FUTURE DIRECTIONS

The qdel utility may be removed in a future version.  

SEE ALSO

Chapter 3, Batch Environment Services, kill, qselect, qsig The Base Definitions volume of POSIX.1-2008, Chapter 8, Environment Variables  

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 .


 

Index

PROLOG
NAME
SYNOPSIS
DESCRIPTION
OPTIONS
OPERANDS
STDIN
INPUT FILES
ENVIRONMENT VARIABLES
ASYNCHRONOUS EVENTS
STDOUT
STDERR
OUTPUT FILES
EXTENDED DESCRIPTION
EXIT STATUS
CONSEQUENCES OF ERRORS
APPLICATION USAGE
EXAMPLES
RATIONALE
FUTURE DIRECTIONS
SEE ALSO
COPYRIGHT


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