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-
       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.1‐2017, 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 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.1‐2017,  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.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.1‐2017 in response to user-perceived 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.1‐2017, 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 1003.1-2017, Standard
       for Information  Technology  --  Portable  Operating  System  Interface  (POSIX),  The  Open  Group  Base
       Specifications  Issue  7, 2018 Edition, Copyright (C) 2018 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 .

       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 .

IEEE/The Open Group                                   2017                                          QSIG(1POSIX)