267 lines
9.4 KiB
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267 lines
9.4 KiB
HTML
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<title>qsig</title>
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<basefont size="3"> <a name="qsig"></a> <a name="tag_04_114"></a><!-- qsig -->
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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_114_01"></a>NAME</h4>
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<blockquote>qsig - signal batch jobs</blockquote>
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<h4><a name="tag_04_114_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"> qsig</tt> <b>[</b><tt>-s</tt> <i>signal</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_114_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>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
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to the batch server that manages the batch job. The <i>qsig</i> utility is a user-accessible batch client that requests the
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signaling of a batch job.</p>
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<p>The <i>qsig</i> utility shall signal those batch jobs for which a batch <i>job_identifier</i> is presented to the utility. The
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<i>qsig</i> utility shall not signal any batch jobs whose batch <i>job_identifier</i>s are not presented to the utility.</p>
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<p>The <i>qsig</i> utility shall signal batch jobs in the order in which the corresponding batch <i>job_identifier</i>s are
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presented to the utility. If the <i>qsig</i> utility fails to process a 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>qsig</i> utility shall signal batch jobs by sending a <i>Signal Job Request</i> to the batch server that manages the
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batch job.</p>
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<p>For each successfully processed batch <i>job_identifier</i>, the <i>qsig</i> utility shall have received a completion reply to
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each <i>Signal Job Request</i> sent to a batch server at the time the utility exits.</p>
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</blockquote>
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<h4><a name="tag_04_114_04"></a>OPTIONS</h4>
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<blockquote>
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<p>The <i>qsig</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>-s </b> <i>signal</i></dt>
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<dd>Define the signal to be sent to the batch job.
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<p>The <i>qsig</i> utility shall accept a <i>signal</i> option-argument that is either a symbolic signal name or an unsigned
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integer signal number (see the POSIX.1-1990 standard, Section 3.3.1.1). The <i>qsig</i> utility shall accept signal names for which
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the SIG prefix has been omitted.</p>
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<p>If the <i>signal</i> option-argument is a signal name, the <i>qsig</i> utility shall send that name.</p>
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<p>If the <i>signal</i> option-argument is a number, the <i>qsig</i> utility shall send the signal value represented by the
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number.</p>
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<p>If the <b>-s</b> option is not presented to the <i>qsig</i> utility, the utility shall send the signal SIGTERM to each signaled
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batch job.</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_114_05"></a>OPERANDS</h4>
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<blockquote>
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<p>The <i>qsig</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_114_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_114_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_114_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>qsig</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_114_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_114_10"></a>STDOUT</h4>
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<blockquote>
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<p>An implementation of the <i>qsig</i> utility may write informative messages to standard output.</p>
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</blockquote>
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<h4><a name="tag_04_114_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_114_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_114_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_114_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_114_15"></a>CONSEQUENCES OF ERRORS</h4>
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<blockquote>
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<p>In addition to the default behavior, the <i>qsig</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>qsig</i> utility waits to output the diagnostic message while attempting to locate the batch job on
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other 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_114_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_114_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_114_18"></a>RATIONALE</h4>
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<blockquote>
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<p>The <i>qsig</i> utility allows users to signal batch jobs.</p>
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<p>A user may be unable to signal a batch job with the <a href="../utilities/kill.html"><i>kill</i></a> utility of the operating
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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
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batch job may be on a remote node. However, by virtue of communication between batch nodes, the <i>qsig</i> utility can arrange for
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the signaling of a process.</p>
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<p>Because a batch job that is not running cannot be signaled, and because the signal may not terminate the batch job, the
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<i>qsig</i> utility is not a substitute for the <a href="../utilities/qdel.html"><i>qdel</i></a> utility.</p>
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<p>The options of the <i>qsig</i> utility allow the user to specify the signal that is to be sent to the batch job.</p>
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<p>The <b>-s</b> option allows users to specify a signal by name or by number, and thus override the default signal. The
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POSIX.1-1990 standard defines signals by both name and number.</p>
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<p>The <i>qsig</i> utility is a new utility, <i>vis-a-vis</i> existing practice; it has been defined in this volume of
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IEEE Std 1003.1-2001 in response to user-perceived shortcomings in existing practice.</p>
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</blockquote>
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<h4><a name="tag_04_114_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_114_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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"qdel.html"><i>qdel</i></a></p>
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</blockquote>
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<h4><a name="tag_04_114_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_114_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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