QSIG(1)                    POSIX Programmer's Manual                   QSIG(1)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

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(1)
