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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta name="generator" content="HTML Tidy, see www.w3.org"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 --><!-- Copyright (c) 2001-2004 IEEE and The Open Group, All Rights Reserved --><title>ipcrm</title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="ipcrm"></a> <a name="tag_04_68"></a><!-- ipcrm --> <!--header start--><center><font size="2">The Open Group Base Specifications Issue 6<br>IEEE Std 1003.1, 2004 Edition<br>Copyright © 2001-2004 The IEEE and The Open Group, All Rights reserved.</font></center><!--header end--><hr size="2" noshade><h4><a name="tag_04_68_01"></a>NAME</h4><blockquote>ipcrm - remove an XSI message queue, semaphore set, or shared memory segment identifier</blockquote><h4><a name="tag_04_68_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><div class="box"><code><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0"> ipcrm</tt> <b>[</b> <tt>-q msgid | -Q msgkey | -s semid | -S semkey |<br> -m shmid | -M shmkey</tt> <b>]</b> <tt>... <img src="../images/opt-end.gif" alt="[Option End]" border="0"></tt></code></div></blockquote><h4><a name="tag_04_68_03"></a>DESCRIPTION</h4><blockquote><p>The <i>ipcrm</i> utility shall remove zero or more message queues, semaphore sets, or shared memory segments. The interprocesscommunication facilities to be removed are specified by the options.</p><p>Only a user with appropriate privilege shall be allowed to remove an interprocess communication facility that was not created byor owned by the user invoking <i>ipcrm</i>.</p></blockquote><h4><a name="tag_04_68_04"></a>OPTIONS</h4><blockquote><p>The <i>ipcrm</i> facility supports the Base Definitions volume of IEEE Std 1003.1-2001, <a href="../basedefs/xbd_chap12.html#tag_12_02">Section 12.2, Utility Syntax Guidelines</a>.</p><p>The following options shall be supported:</p><dl compact><dt><b>-q </b> <i>msgid</i></dt><dd>Remove the message queue identifier <i>msgid</i> from the system and destroy the message queue and data structure associatedwith it.</dd><dt><b>-m </b> <i>shmid</i></dt><dd>Remove the shared memory identifier <i>shmid</i> from the system. The shared memory segment and data structure associated withit shall be destroyed after the last detach.</dd><dt><b>-s </b> <i>semid</i></dt><dd>Remove the semaphore identifier <i>semid</i> from the system and destroy the set of semaphores and data structure associatedwith it.</dd><dt><b>-Q </b> <i>msgkey</i></dt><dd>Remove the message queue identifier, created with key <i>msgkey</i>, from the system and destroy the message queue and datastructure associated with it.</dd><dt><b>-M </b> <i>shmkey</i></dt><dd>Remove the shared memory identifier, created with key <i>shmkey</i>, from the system. The shared memory segment and datastructure associated with it shall be destroyed after the last detach.</dd><dt><b>-S </b> <i>semkey</i></dt><dd>Remove the semaphore identifier, created with key <i>semkey</i>, from the system and destroy the set of semaphores and datastructure associated with it.</dd></dl></blockquote><h4><a name="tag_04_68_05"></a>OPERANDS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_06"></a>STDIN</h4><blockquote><p>Not used.</p></blockquote><h4><a name="tag_04_68_07"></a>INPUT FILES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_08"></a>ENVIRONMENT VARIABLES</h4><blockquote><p>The following environment variables shall affect the execution of <i>ipcrm</i>:</p><dl compact><dt><i>LANG</i></dt><dd>Provide a default value for the internationalization variables that are unset or null. (See the Base Definitions volume ofIEEE Std 1003.1-2001, <a href="../basedefs/xbd_chap08.html#tag_08_02">Section 8.2, Internationalization Variables</a> forthe precedence of internationalization variables used to determine the values of locale categories.)</dd><dt><i>LC_ALL</i></dt><dd>If set to a non-empty string value, override the values of all the other internationalization variables.</dd><dt><i>LC_CTYPE</i></dt><dd>Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte asopposed to multi-byte characters in arguments).</dd><dt><i>LC_MESSAGES</i></dt><dd>Determine the locale that should be used to affect the format and contents of diagnostic messages written to standarderror.</dd><dt><i>NLSPATH</i></dt><dd>Determine the location of message catalogs for the processing of <i>LC_MESSAGES .</i></dd></dl></blockquote><h4><a name="tag_04_68_09"></a>ASYNCHRONOUS EVENTS</h4><blockquote><p>Default.</p></blockquote><h4><a name="tag_04_68_10"></a>STDOUT</h4><blockquote><p>Not used.</p></blockquote><h4><a name="tag_04_68_11"></a>STDERR</h4><blockquote><p>The standard error shall be used only for diagnostic messages.</p></blockquote><h4><a name="tag_04_68_12"></a>OUTPUT FILES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_13"></a>EXTENDED DESCRIPTION</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_14"></a>EXIT STATUS</h4><blockquote><p>The following exit values shall be returned:</p><dl compact><dt> 0</dt><dd>Successful completion.</dd><dt>>0</dt><dd>An error occurred.</dd></dl></blockquote><h4><a name="tag_04_68_15"></a>CONSEQUENCES OF ERRORS</h4><blockquote><p>Default.</p></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_04_68_16"></a>APPLICATION USAGE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_17"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_18"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_19"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_04_68_20"></a>SEE ALSO</h4><blockquote><p><a href="ipcs.html"><i>ipcs</i></a>, the System Interfaces volume of IEEE Std 1003.1-2001, <a href="../functions/msgctl.html"><i>msgctl</i>()</a>, <a href="../functions/semctl.html"><i>semctl</i>()</a>, <a href="../functions/shmctl.html"><i>shmctl</i>()</a></p></blockquote><h4><a name="tag_04_68_21"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 5.</p></blockquote><div class="box"><em>End of informative text.</em></div><hr size="2" noshade><center><font size="2"><!--footer start-->UNIX ® is a registered Trademark of The Open Group.<br>POSIX ® is a registered Trademark of The IEEE.<br>[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href="../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>]</font></center><!--footer end--><hr size="2" noshade></body></html>⌨️ 快捷键说明
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