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

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-accessible 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 pre-
       sented 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 corresponding 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 util-
       ity 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, Inter-
	      nationalization Variables 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 interna-
	      tionalization 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 argu-
	      ments).

       LC_MESSAGES
	      Determine the locale that should be used to affect the format and contents of diag-
	      nostic 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_identifier 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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003					  QSIG(P)
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