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qsig(1posix)

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 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
   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 utility exits.

OPTIONS

   The  qsig  utility  shall  conform  to  the  Base Definitions volume of
   POSIX.12008, 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.11990   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
   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  POSIX.12008,  Section  8.2,  Internationalization
             Variables  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_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.11990 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.12008  in  response  to  user-
   perceived shortcomings in existing practice.

FUTURE DIRECTIONS

   The qsig utility may be removed in a future version.

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
   Electrical 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.kernel.org/doc/man-pages/reporting_bugs.html .

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