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

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  success-
       fully,  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  Vari-
              ables  for 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_identi-
       fier 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  avail-
       able.  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 exist-
       ing 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  possibil-
       ity 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, 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 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 .

IEEE/The Open Group                  2003                              QDEL(P)

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