<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <!--Converted with LaTeX2HTML 96.1-c (Feb 29, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --> <HTML> <HEAD> <TITLE>The ipcrm Command</TITLE> <META NAME="description" CONTENT="The ipcrm Command"> <META NAME="keywords" CONTENT="lpg"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <LINK REL=STYLESHEET HREF="lpg.css"> </HEAD> <BODY LANG="EN"> <A NAME="tex2html694" HREF="node27.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="/icons//next_motif.gif"></A> <A NAME="tex2html692" HREF="node22.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="/icons//up_motif.gif"></A> <A NAME="tex2html688" HREF="node25.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="/icons//previous_motif.gif"></A> <A NAME="tex2html696" HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="/icons//contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html695" HREF="node27.html">6.4.2 Message Queues</A> <B>Up:</B> <A NAME="tex2html693" HREF="node22.html">6.4.1 Fundamental Concepts</A> <B> Previous:</B> <A NAME="tex2html689" HREF="node25.html">The ipcs Command</A> <BR> <P> <H3><A NAME="SECTION00741400000000000000">The <TT>ipcrm</TT> Command</A></H3> <P> The <TT>ipcrm</TT> command can be used to remove an IPC object from the kernel. While IPC objects can be removed via system calls in user code (we'll see how in a moment), the need often arises, especially under development environments, to remove IPC objects manually. Its usage is simple: <P> <P> <HR><PRE>ipcrm <msg | sem | shm> <IPC ID></PRE> <HR>Simply specify whether the object to be deleted is a message queue (<EM>msg</EM>), a semaphore set (<EM>sem</EM>), or a shared memory segment (<EM>shm</EM>). The IPC ID can be obtained by the <TT>ipcs</TT> command. You have to specify the type of object, since identifiers are unique among the same type (recall our discussion of this earlier). <P> <BR> <HR> <P><ADDRESS> <I>Converted on: <BR> Fri Mar 29 14:43:04 EST 1996</I> </ADDRESS> </BODY> </HTML>
