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<div id="page-content"><div id="preamble"><h1>Apache模块 mod_cern_meta</h1>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="module">
<tr><th><a href="module-dict.html#Description">说明</a></th><td>允许Apache使用CERN httpd元文件，从而可以在发送文件时对头进行修改</td></tr>
<tr><th><a href="module-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">模块名</a></th><td>cern_meta_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">源文件</a></th><td>mod_cern_meta.c</td></tr>
</table>
<h3>概述</h3>
<p>Emulate the CERN HTTPD Meta file semantics. Meta files are HTTP
headers that can be output in addition to the normal range of
headers for each file accessed. They appear rather like the
Apache .asis files, and are able to provide a crude way of
influencing the Expires: header, as well as providing other
curiosities. There are many ways to manage meta information,
this one was chosen because there is already a large number of
CERN users who can exploit this module.</p>
<p>More information on the <a href="http://www.w3.org/pub/WWW/Daemon/User/Config/General.html#MetaDir">CERN metafile semantics</a> is available.</p>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="MetaDir" id="MetaDir">MetaDir</a> <a name="metadir" id="metadir">指令</a></h2>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="directive">
<tr><th><a href="directive-dict.html#Description">说明</a></th><td>Name of the directory to find CERN-style meta information
files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">语法</a></th><td><code>MetaDir <var>directory</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">默认值</a></th><td><code>MetaDir .web</code></td></tr>
<tr><th><a href="directive-dict.html#Context">作用域</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">覆盖项</a></th><td>Indexes</td></tr>
<tr><th><a href="directive-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="directive-dict.html#Module">模块</a></th><td>mod_cern_meta</td></tr>
</table>
<p>Specifies the name of the directory in which Apache can find
meta information files. The directory is usually a 'hidden'
subdirectory of the directory that contains the file being
accessed. Set to "<code>.</code>" to look in the same directory
as the file:</p>
<div class="example"><p><code>MetaDir .</code></p></div>
<p>Or, to set it to a subdirectory of the directory containing the
files:</p>
<div class="example"><p><code>MetaDir .meta</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="MetaFiles" id="MetaFiles">MetaFiles</a> <a name="metafiles" id="metafiles">指令</a></h2>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="directive">
<tr><th><a href="directive-dict.html#Description">说明</a></th><td>Activates CERN meta-file processing</td></tr>
<tr><th><a href="directive-dict.html#Syntax">语法</a></th><td><code>MetaFiles on|off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">默认值</a></th><td><code>MetaFiles off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">作用域</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">覆盖项</a></th><td>Indexes</td></tr>
<tr><th><a href="directive-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="directive-dict.html#Module">模块</a></th><td>mod_cern_meta</td></tr>
</table>
<p>Turns on/off Meta file processing on a per-directory basis.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="MetaSuffix" id="MetaSuffix">MetaSuffix</a> <a name="metasuffix" id="metasuffix">指令</a></h2>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="directive">
<tr><th><a href="directive-dict.html#Description">说明</a></th><td>File name suffix for the file containg CERN-style
meta information</td></tr>
<tr><th><a href="directive-dict.html#Syntax">语法</a></th><td><code>MetaSuffix <var>suffix</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">默认值</a></th><td><code>MetaSuffix .meta</code></td></tr>
<tr><th><a href="directive-dict.html#Context">作用域</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">覆盖项</a></th><td>Indexes</td></tr>
<tr><th><a href="directive-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="directive-dict.html#Module">模块</a></th><td>mod_cern_meta</td></tr>
</table>
<p>Specifies the file name suffix for the file containing the
meta information. For example, the default values for the two
directives will cause a request to
<code>DOCUMENT_ROOT/somedir/index.html</code> to look in
<code>DOCUMENT_ROOT/somedir/.web/index.html.meta</code> and
will use its contents to generate additional MIME header
information.</p>
<div class="example"><h3>示例：</h3><p><code>
MetaSuffix .meta
</code></p></div>
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