254 lines
9.0 KiB
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254 lines
9.0 KiB
HTML
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<title>qdel</title>
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<basefont size="3"> <a name="qdel"></a> <a name="tag_04_107"></a><!-- qdel -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_04_107_01"></a>NAME</h4>
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<blockquote>qdel - delete batch jobs</blockquote>
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<h4><a name="tag_04_107_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<div class="box"><code><tt><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt=
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"[Option Start]" border="0"> qdel</tt> <i>job_identifier</i> <tt>... <img src="../images/opt-end.gif" alt="[Option End]" border=
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"0"></tt></code></div>
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</blockquote>
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<h4><a name="tag_04_107_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>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
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no longer subject to management by batch services.</p>
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<p>The <i>qdel</i> utility is a user-accessible client of batch services that requests the deletion of one or more batch jobs.</p>
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<p>The <i>qdel</i> utility shall request a batch server to delete those batch jobs for which a batch <i>job_identifier</i> is
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presented to the utility.</p>
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<p>The <i>qdel</i> utility shall delete batch jobs in the order in which their batch <i>job_identifier</i>s are presented to the
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utility.</p>
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<p>If the <i>qdel</i> utility fails to process any batch <i>job_identifier</i> successfully, the utility shall proceed to process
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the remaining batch <i>job_identifier</i>s, if any.</p>
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<p>The <i>qdel</i> utility shall delete each batch job by sending a <i>Delete Job Request</i> to the batch server that manages the
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batch job.</p>
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<p>The <i>qdel</i> utility shall not exit until the batch job corresponding to each successfully processed batch
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<i>job_identifier</i> has been deleted.</p>
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</blockquote>
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<h4><a name="tag_04_107_04"></a>OPTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_04_107_05"></a>OPERANDS</h4>
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<blockquote>
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<p>The <i>qdel</i> utility shall accept one or more operands that conform to the syntax for a batch <i>job_identifier</i> (see <a
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href="xcu_chap03.html#tag_03_03_01"><i>Batch Job Identifier</i></a> ).</p>
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</blockquote>
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<h4><a name="tag_04_107_06"></a>STDIN</h4>
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<blockquote>
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<p>Not used.</p>
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</blockquote>
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<h4><a name="tag_04_107_07"></a>INPUT FILES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_04_107_08"></a>ENVIRONMENT VARIABLES</h4>
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<blockquote>
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<p>The following environment variables shall affect the execution of <i>qdel</i>:</p>
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<dl compact>
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<dt><i>LANG</i></dt>
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<dd>Provide a default value for the internationalization variables that are unset or null. (See the Base Definitions volume of
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IEEE Std 1003.1-2001, <a href="../basedefs/xbd_chap08.html#tag_08_02">Section 8.2, Internationalization Variables</a> for
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the precedence of internationalization variables used to determine the values of locale categories.)</dd>
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<dt><i>LC_ALL</i></dt>
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<dd>If set to a non-empty string value, override the values of all the other internationalization variables.</dd>
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<dt><i>LC_CTYPE</i></dt>
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<dd>Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as
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opposed to multi-byte characters in arguments).</dd>
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<dt><i>LC_MESSAGES</i></dt>
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<dd>Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard
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error.</dd>
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<dt><i>LOGNAME</i></dt>
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<dd>Determine the login name of the user.</dd>
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</dl>
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</blockquote>
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<h4><a name="tag_04_107_09"></a>ASYNCHRONOUS EVENTS</h4>
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<blockquote>
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<p>Default.</p>
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</blockquote>
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<h4><a name="tag_04_107_10"></a>STDOUT</h4>
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<blockquote>
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<p>An implementation of the <i>qdel</i> utility may write informative messages to standard output.</p>
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</blockquote>
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<h4><a name="tag_04_107_11"></a>STDERR</h4>
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<blockquote>
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<p>The standard error shall be used only for diagnostic messages.</p>
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</blockquote>
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<h4><a name="tag_04_107_12"></a>OUTPUT FILES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_04_107_13"></a>EXTENDED DESCRIPTION</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_04_107_14"></a>EXIT STATUS</h4>
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<blockquote>
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<p>The following exit values shall be returned:</p>
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<dl compact>
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<dt> 0</dt>
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<dd>Successful completion.</dd>
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<dt>>0</dt>
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<dd>An error occurred.</dd>
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</dl>
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</blockquote>
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<h4><a name="tag_04_107_15"></a>CONSEQUENCES OF ERRORS</h4>
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<blockquote>
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<p>In addition to the default behavior, the <i>qdel</i> utility shall not be required to write a diagnostic message to standard
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error when the error reply received from a batch server indicates that the batch <i>job_identifier</i> does not exist on the
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server. Whether or not the <i>qdel</i> utility waits to output the diagnostic message while attempting to locate the job on other
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servers is implementation-defined.</p>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_04_107_16"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_04_107_17"></a>EXAMPLES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_04_107_18"></a>RATIONALE</h4>
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<blockquote>
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<p>The <i>qdel</i> utility allows users and administrators to delete jobs.</p>
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<p>The <i>qdel</i> utility provides functionality that is not otherwise available. For example, the <a href=
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"../utilities/kill.html"><i>kill</i></a> utility of the operating system does not suffice. First, to use the <a href=
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"../utilities/kill.html"><i>kill</i></a> utility, the user might have to log in on a remote node, because the <a href=
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"../utilities/kill.html"><i>kill</i></a> utility does not operate across the network. Second, unlike <i>qdel</i>, <a href=
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"../utilities/kill.html"><i>kill</i></a> cannot remove jobs from queues. Lastly, the arguments of the <i>qdel</i> utility are job
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identifiers rather than process identifiers, and so this utility can be passed the output of the <a href=
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"../utilities/qselect.html"><i>qselect</i></a> utility, thus providing users with a means of deleting a list of jobs.</p>
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<p>Because a set of jobs can be selected using the <a href="../utilities/qselect.html"><i>qselect</i></a> utility, the <i>qdel</i>
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utility has not been complicated with options that provide for selection of jobs. Instead, the batch jobs to be deleted are
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identified individually by their job identifiers.</p>
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<p>Historically, the <i>qdel</i> utility has been a component of NQS, the existing practice on which it is based. However, the
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<i>qdel</i> utility defined in this volume of IEEE Std 1003.1-2001 does not provide an option for specifying a signal
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number to send to the batch job prior to the killing of the process; that capability has been subsumed by the <a href=
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"../utilities/qsig.html"><i>qsig</i></a> utility.</p>
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<p>A discussion was held about the delays of networking and the possibility that the batch server may never respond, due to a down
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router, down batch server, or other network mishap. The DESCRIPTION records this under the words "fails to process any job
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identifier". In the broad sense, the network problem is also an error, which causes the failure to process the batch job
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identifier.</p>
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</blockquote>
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<h4><a name="tag_04_107_19"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_04_107_20"></a>SEE ALSO</h4>
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<blockquote>
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<p><a href="xcu_chap03.html#tag_03"><i>Batch Environment Services</i></a> , <a href="kill.html"><i>kill</i>()</a> , <a href=
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"qselect.html"><i>qselect</i></a> , <a href="qsig.html"><i>qsig</i></a></p>
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</blockquote>
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<h4><a name="tag_04_107_21"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>Derived from IEEE Std 1003.2d-1994.</p>
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</blockquote>
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<h4><a name="tag_04_107_22"></a>Issue 6</h4>
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<blockquote>
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<p>The <i>LC_TIME</i> and <i>TZ</i> entries are removed from the ENVIRONMENT VARIABLES section.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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