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



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult 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  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 IEEE Std 1003.1-2001, Section 8.2, Internationalization Variables for the precedence  of  international-
              ization 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 stan-
              dard 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  argu-
       ments of the qdel utility are job identifiers rather than process identifiers, and so this utility can be passed the out-
       put 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 iden-
       tifiers.

       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 IEEE Std 1003.1-2001 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
       None.

SEE ALSO
       Batch Environment Services, kill(), qselect, qsig

COPYRIGHT
       Portions  of  this  text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for
       Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6,  Copy-
       right (C) 2001-2003 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.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                      QDEL(1P)