# qdel

## 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



           qdel — delete batch jobs
    


## SYNOPSIS



           qdel _job_identifier_...
    


## DESCRIPTION



           A batch job is deleted by sending a request to the batch server
           that manages the batch job. A batch job that has been deleted is
           no longer subject to management by batch services.
    
           The _qdel_ utility is a user-accessible client of batch services
           that requests the deletion of one or more batch jobs.
    
           The _qdel_ utility shall request a batch server to delete those
           batch jobs for which a batch _job_identifier_ is presented to the
           utility.
    
           The _qdel_ utility shall delete batch jobs in the order in which
           their batch _job_identifier_ s are presented to the utility.
    
           If the _qdel_ utility fails to process any batch _job_identifier_
           successfully, the utility shall proceed to process the remaining
           batch _job_identifier_ s, if any.
    
           The _qdel_ utility shall delete each batch job by sending a _Delete_
           _Job Request_ to the batch server that manages the batch job.
    
           The _qdel_ utility shall not exit until the batch job corresponding
           to each successfully processed batch _job_identifier_ has been
           deleted.
    


## OPTIONS



           None.
    


## OPERANDS



           The _qdel_ 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
           _qdel_ :
    
           _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 _qdel_ 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 _qdel_ 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
           _qdel_ utility waits to output the diagnostic message while
           attempting to locate the job on other servers is implementation-
           defined.
    
           _The following sections are informative._
    


## APPLICATION USAGE



           None.
    


## EXAMPLES



           None.
    


## RATIONALE



           The _qdel_ utility allows users and administrators to delete jobs.
    
           The _qdel_ utility provides functionality that is not otherwise
           available. For example, the _kill_ utility of the operating system
           does not suffice. First, to use the _kill_ utility, the user might
           have to log in on a remote node, because the _kill_ utility does not
           operate across the network. Second, unlike _qdel_ , _kill_ cannot
           remove jobs from queues. Lastly, the arguments of the _qdel_ utility
           are job identifiers rather than process identifiers, and so this
           utility can be passed the output of the _qselect_ utility, thus
           providing users with a means of deleting a list of jobs.
    
           Because a set of jobs can be selected using the _qselect_ utility,
           the _qdel_ utility has not been complicated with options that
           provide for selection of jobs. Instead, the batch jobs to be
           deleted are identified individually by their job identifiers.
    
           Historically, the _qdel_ utility has been a component of NQS, the
           existing practice on which it is based. However, the _qdel_ utility
           defined in this volume of POSIX.1‐2017 does not provide an option
           for specifying a signal number to send to the batch job prior to
           the killing of the process; that capability has been subsumed by
           the _qsig_ utility.
    
           A discussion was held about the delays of networking and the
           possibility that the batch server may never respond, due to a down
           router, down batch server, or other network mishap. The
           DESCRIPTION records this under the words ``fails to process any
           job identifier''.  In the broad sense, the network problem is also
           an error, which causes the failure to process the batch job
           identifier.
    


## FUTURE DIRECTIONS



           The _qdel_ utility may be removed in a future version.
    


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