299 lines
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299 lines
10 KiB
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<title>qhold</title>
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<basefont size="3"> <a name="qhold"></a> <a name="tag_04_108"></a><!-- qhold -->
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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_108_01"></a>NAME</h4>
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<blockquote>qhold - hold batch jobs</blockquote>
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<h4><a name="tag_04_108_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"> qhold</tt> <b>[</b><tt>-h</tt> <i>hold_list</i><b>]</b> <i>job_identifier</i> <tt>... <img src=
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"../images/opt-end.gif" alt="[Option End]" border="0"></tt></code></div>
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</blockquote>
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<h4><a name="tag_04_108_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>A hold is placed on a batch job by a request to the batch server that manages the batch job. A batch job that has one or more
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holds is not eligible for execution. The <i>qhold</i> utility is a user-accessible client of batch services that requests one or
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more types of hold to be placed on one or more batch jobs.</p>
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<p>The <i>qhold</i> utility shall place holds on those batch jobs for which a batch <i>job_identifier</i> is presented to the
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utility.</p>
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<p>The <i>qhold</i> utility shall place holds on batch jobs in the order in which their batch <i>job_identifier</i>s are presented
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to the utility. If the <i>qhold</i> utility fails to process any batch <i>job_identifier</i> successfully, the utility shall
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proceed to process the remaining batch <i>job_identifier</i>s, if any.</p>
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<p>The <i>qhold</i> utility shall place holds on each batch job by sending a <i>Hold Job Request</i> to the batch server that
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manages the batch job.</p>
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<p>The <i>qhold</i> utility shall not exit until holds have been placed on the batch job corresponding to each successfully
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processed batch <i>job_identifier</i>.</p>
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</blockquote>
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<h4><a name="tag_04_108_04"></a>OPTIONS</h4>
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<blockquote>
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<p>The <i>qhold</i> utility shall conform to the Base Definitions volume of IEEE Std 1003.1-2001, <a href=
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"../basedefs/xbd_chap12.html#tag_12_02">Section 12.2, Utility Syntax Guidelines</a>.</p>
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<p>The following option shall be supported by the implementation:</p>
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<dl compact>
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<dt><b>-h </b> <i>hold_list</i></dt>
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<dd>Define the types of holds to be placed on the batch job.
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<p>The <i>qhold</i> <b>-h</b> option shall accept a value for the <i>hold_list</i> option-argument that is a string of alphanumeric
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characters in the portable character set (see the Base Definitions volume of IEEE Std 1003.1-2001, <a href=
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"../basedefs/xbd_chap06.html#tag_06_01">Section 6.1, Portable Character Set</a>).</p>
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<p>The <i>qhold</i> utility shall accept a value for the <i>hold_list</i> option-argument that is a string of one or more of the
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characters <tt>'u'</tt> , <tt>'s'</tt> , or <tt>'o'</tt> , or the single character <tt>'n'</tt> .</p>
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<p>For each unique character in the <i>hold_list</i> option-argument, the <i>qhold</i> utility shall add a value to the
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<i>Hold_Types</i> attribute of the batch job as follows, each representing a different hold type:</p>
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<dl compact>
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<dt><tt>u</tt></dt>
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<dd>USER</dd>
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<dt><tt>s</tt></dt>
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<dd>SYSTEM</dd>
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<dt><tt>o</tt></dt>
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<dd>OPERATOR</dd>
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</dl>
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<p>If any of these characters are duplicated in the <i>hold_list</i> option-argument, the duplicates shall be ignored.</p>
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<p>An existing <i>Hold_Types</i> attribute can be cleared by the following hold type:</p>
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<dl compact>
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<dt><tt>n</tt></dt>
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<dd>NO_HOLD</dd>
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</dl>
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<p>The <i>qhold</i> utility shall consider it an error if any hold type other than <tt>'n'</tt> is combined with hold type
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<tt>'n'</tt> .</p>
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<p>Strictly conforming applications shall not repeat any of the characters <tt>'u'</tt> , <tt>'s'</tt> , <tt>'o'</tt> , or
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<tt>'n'</tt> within the <i>hold_list</i> option-argument. The <i>qhold</i> utility shall permit the repetition of characters, but
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shall not assign additional meaning to the repeated characters.</p>
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<p>An implementation may define other hold types. The conformance document for an implementation shall describe any additional hold
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types, how they are specified, their internal behavior, and how they affect the behavior of the utility.</p>
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<p>If the <b>-h</b> option is not presented to the <i>qhold</i> utility, the implementation shall set the <i>Hold_Types</i>
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attribute to USER.</p>
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</dd>
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</dl>
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</blockquote>
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<h4><a name="tag_04_108_05"></a>OPERANDS</h4>
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<blockquote>
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<p>The <i>qhold</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_108_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_108_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_108_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>qhold</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_108_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_108_10"></a>STDOUT</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_108_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_108_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_108_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_108_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_108_15"></a>CONSEQUENCES OF ERRORS</h4>
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<blockquote>
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<p>In addition to the default behavior, the <i>qhold</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>qhold</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_108_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_108_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_108_18"></a>RATIONALE</h4>
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<blockquote>
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<p>The <i>qhold</i> utility allows users to place a hold on one or more jobs. A hold makes a batch job ineligible for
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execution.</p>
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<p>The <i>qhold</i> utility has options that allow the user to specify the type of hold. Should the user wish to place a hold on a
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set of jobs that meet a selection criteria, such a list of jobs can be acquired using the <a href=
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"../utilities/qselect.html"><i>qselect</i></a> utility.</p>
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<p>The <b>-h</b> option allows the user to specify the type of hold that is to be placed on the job. This option allows for USER,
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SYSTEM, OPERATOR, and implementation-defined hold types. The USER and OPERATOR holds are distinct. The batch server that manages
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the batch job will verify that the user is authorized to set the specified hold for the batch job.</p>
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<p>Mail is not required on hold because the administrator has the tools and libraries to build this option if he or she wishes.</p>
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<p>Historically, the <i>qhold</i> utility has been a part of some existing batch systems, although it has not traditionally been a
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part of the NQS.</p>
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</blockquote>
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<h4><a name="tag_04_108_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_108_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="qselect.html"><i>qselect</i></a></p>
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</blockquote>
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<h4><a name="tag_04_108_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_108_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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<hr>
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<hr size="2" noshade>
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<center><font size="2"><!--footer start-->
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UNIX ® is a registered Trademark of The Open Group.<br>
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POSIX ® is a registered Trademark of The IEEE.<br>
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