# qsig

## 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_identifier_ s are not
           presented to the utility.
    
           The _qsig_ utility shall signal batch jobs in the order in which the
           corresponding batch _job_identifier_ s 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_identifier_ s, 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.
    


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