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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 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 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 Section 3.3.1, Batch Job Identi‐
       fier).

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 vari‐
		 ables that are unset or null. (See the Base Definitions  vol‐
		 ume  of POSIX.1‐2008, Section 8.2, Internationalization Vari‐
		 ables 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 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 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
       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 Electri‐
       cal  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.ker‐
       nel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group		     2013			      QDEL(1P)
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