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<html><head><title>ExtUtils::Installed (Perl in a Nutshell, 2nd Edition)</title><link rel="stylesheet" type="text/css" href="../style/style1.css" /><meta name="DC.Creator" content="Stephen Spainhour" /><meta name="DC.Format" content="text/xml" scheme="MIME" /><meta name="DC.Language" content="en-US" /><meta name="DC.Publisher" content="O'Reilly & Associates, Inc." /><meta name="DC.Source" scheme="ISBN" content="0596002416L" /><meta name="DC.Subject.Keyword" content="stuff" /><meta name="DC.Title" content="Perl in a Nutshell, 2nd Edition" /><meta name="DC.Type" content="Text.Monograph" /></head><body bgcolor="#ffffff"><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home" /><map name="banner-map"><area shape="rect" coords="1,-2,616,66" href="index.htm" alt="Java and XSLT" /><area shape="rect" coords="629,-11,726,25" href="jobjects/fsearch.htm" alt="Search this book" /></map><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_71.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228" /><td align="right" valign="top" width="228"><a href="ch08_73.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">8.72. ExtUtils::Installed</h2><p><a name="INDEX-1417" />Provides inventory management forinstalled modules, based on the contents of the<em class="emphasis">.packlist</em> files that are created duringinstallation. It also permits classifying the installed files andextracting directory information from the<em class="emphasis">.packlist</em> files.</p><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>new</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre><tt class="literal">$</tt><em class="replaceable">inst</em> = ExtUtils::Installed->new( )</pre><p>Searches for all installed <em class="emphasis">.packlists</em> on thesystem and stores their contents. Takes no parameters; usesExtUtils::Packlist to read the <em class="emphasis">.packlist</em> files.</p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>directories</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre><tt class="literal">$</tt><em class="replaceable">inst</em>->directories(<em class="replaceable">module</em>[, <em class="replaceable">string</em>[, <em class="replaceable">dir</em>[,...]]])</pre><p>Returns list of directories. Returns only directories that containfiles from the specified module. Parameters are:</p><dl><dt><i><em class="replaceable"><tt>module</tt></em></i></dt><dd>Required. The name of a module; returns a list of all directories inthe package.</p></dd><dt><i><em class="replaceable"><tt>string</tt></em></i></dt><dd>Optional. Possible values are <tt class="literal">prog</tt>,<tt class="literal">man</tt>, or <tt class="literal">all</tt> to return programdirectories, manual directories, or all directories, respectively.</p></dd><dt><i><em class="replaceable"><tt>dir</tt></em></i></dt><dd>Optional. One or more directories. If specified, only directoriesunder the specified directories are returned.</p></dd></dl></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>directory_tree</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">inst</em>->directory_tree(<em class="replaceable">module</em>[, <em class="replaceable">string</em>[, <em class="replaceable">dir</em>[,...]]])</pre><p>Like <tt class="literal">directories</tt>, but includes all intermediatedirectories.</p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>files</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">inst</em>->files(<em class="replaceable">module</em>[, <em class="replaceable">string</em>[, <em class="replaceable">dir</em>[,...]]])</pre><p>Returns list of filenames. Parameters are:</p><dl><dt><i><em class="replaceable"><tt>module</tt></em></i></dt><dd>Required. The name of a module; returns a list of all filenames inthe package. For a list of core files, use the special module namePerl.</p></dd><dt><i><em class="replaceable"><tt>string</tt></em></i></dt><dd>Optional. Possible values are <tt class="literal">prog</tt>,<tt class="literal">man</tt>, or <tt class="literal">all</tt> to return programfiles, manual files, or all files, respectively.</p></dd><dt><i><em class="replaceable"><tt>dir</tt></em></i></dt><dd>Optional. One or more directories. If specified, only filenames underthe specified directories are returned.</p></dd></dl></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>modules</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">inst</em>->modules( )</pre><p>Returns list of names of all the installed modules. Calls the Perl"core" by the special name Perl.</p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>packlist</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">inst</em>->packlist(<em class="replaceable">module</em>)</pre><p>Returns the <tt class="literal">ExtUtils::Packlist</tt> object for thespecified module.</p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>validate</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">inst</em>->validate(<em class="replaceable">module</em>[, <em class="replaceable">arg</em>])</pre><p>Takes the name of a module as a required parameter and validates thatall files listed in the <tt class="literal">packlist</tt> for the moduleactually exist. Returns list of any missing files. With an optionalsecond argument that evaluates to true, removes missing files from<em class="emphasis">.packlist</em>.</p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>version</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>$<em class="replaceable">inst</em>->version(<em class="replaceable">module</em>)</pre><p>Returns the version number of the specified module.</p></div><hr width="684" align="left" /><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_71.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0" /></a></td><td align="right" valign="top" width="228"><a href="ch08_73.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">8.71. ExtUtils::Install</td><td align="center" valign="top" width="228"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0" /></a></td><td align="right" valign="top" width="228">8.73. ExtUtils::Liblist</td></tr></table></div><hr width="684" align="left" /><img src="../gifs/navbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links" /><p><p><font size="-1"><a href="copyrght.htm">Copyright © 2002</a> O'Reilly & Associates. 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