QDEL(1)                    POSIX Programmer's Manual                   QDEL(1)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

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.1-2017, 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.1-2017 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.1-2017, Chapter _8, Environment
       Variables

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  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.opengroup.org/unix/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 .



IEEE/The Open Group                  2017                              QDEL(1)
