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QSIG(1P)		   POSIX Programmer's Manual		      QSIG(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
       qsig — signal batch jobs

SYNOPSIS
       qsig [−s signal] job_identifier...

DESCRIPTION
       To signal a batch job is to send a signal to the session leader of  the
       batch  job.  A  batch job is signaled by sending a request to the batch
       server that manages the batch job. The qsig utility is a	 user-accessi‐
       ble batch client that requests the signaling of a batch job.

       The  qsig  utility  shall  signal  those	 batch	jobs for which a batch
       job_identifier is presented to the utility. The qsig utility shall  not
       signal  any batch jobs whose batch job_identifiers are not presented to
       the utility.

       The qsig utility shall signal batch jobs in the order in which the cor‐
       responding  batch  job_identifiers are presented to the utility. If the
       qsig utility fails to process a batch job_identifier successfully,  the
       utility	shall  proceed to process the remaining batch job_identifiers,
       if any.

       The qsig utility shall signal  batch  jobs  by  sending	a  Signal  Job
       Request to the batch server that manages the batch job.

       For  each successfully processed batch job_identifier, the qsig utility
       shall have received a completion reply to each Signal Job Request  sent
       to a batch server at the time the utility exits.

OPTIONS
       The  qsig  utility  shall  conform  to  the  Base Definitions volume of
       POSIX.1‐2008, Section 12.2, Utility Syntax Guidelines.

       The following option shall be supported by the implementation:

       −s signal Define the signal to be sent to the batch job.

		 The qsig utility shall accept a signal	 option-argument  that
		 is  either a symbolic signal name or an unsigned integer sig‐
		 nal number (see the POSIX.1‐1990 standard, Section  3.3.1.1).
		 The  qsig utility shall accept signal names for which the SIG
		 prefix has been omitted.

		 If the signal option-argument is  a  signal  name,  the  qsig
		 utility shall send that name.

		 If  the  signal option-argument is a number, the qsig utility
		 shall send the signal value represented by the number.

		 If the −s option is not presented to the  qsig	 utility,  the
		 utility  shall send the signal SIGTERM to each signaled batch
		 job.

OPERANDS
       The qsig 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 qsig:

       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 qsig 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	 qsig  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 qsig utility
       waits to output the diagnostic message while attempting to  locate  the
       batch job on other servers is implementation-defined.

       The following sections are informative.

APPLICATION USAGE
       None.

EXAMPLES
       None.

RATIONALE
       The qsig utility allows users to signal batch jobs.

       A user may be unable to signal a batch job with the kill utility of the
       operating system for a number of reasons. First, the process ID of  the
       batch  job  may	be  unknown  to the user. Second, the processes of the
       batch job may be on a remote node. However, by virtue of	 communication
       between	batch nodes, the qsig utility can arrange for the signaling of
       a process.

       Because a batch job that is not running cannot be signaled, and because
       the  signal  may not terminate the batch job, the qsig utility is not a
       substitute for the qdel utility.

       The options of the qsig utility allow the user to  specify  the	signal
       that is to be sent to the batch job.

       The  −s	option	allows users to specify a signal by name or by number,
       and thus override the default signal. The POSIX.1‐1990 standard defines
       signals by both name and number.

       The  qsig utility is a new utility, vis-a-vis existing practice; it has
       been defined in this volume of POSIX.1‐2008 in  response	 to  user-per‐
       ceived shortcomings in existing practice.

FUTURE DIRECTIONS
       The qsig utility may be removed in a future version.

SEE ALSO
       Chapter 3, Batch Environment Services, kill, qdel

       The  Base  Definitions  volume  of POSIX.1‐2008, Chapter 8, Environment
       Variables, Section 12.2, Utility Syntax Guidelines

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			      QSIG(1P)
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