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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 dif-
       fer (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 pro-
       cess 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  prece-
              dence 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  exam-
              ple, 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 writ-
              ten 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  attempt-
       ing 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  identi-
       fiers,  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.  How-
       ever, 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, Stan-
       dard  for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifica-
       tions Issue 6, Copyright (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 Stan-
       dard, 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 .



IEEE/The Open Group                  2003                             QDEL(1P)