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

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
       IEEE Std 1003.1-2001, 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 signal 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 Batch Job Identifier ).

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 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 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	IEEE Std 1003.1-2001  in  response  to
       user-perceived shortcomings in existing practice.

FUTURE DIRECTIONS
       None.

SEE ALSO
       Batch Environment Services , kill() , qdel

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			       QSIG(P)
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