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--><title>mod_env - Apache HTTP Server</title><link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /><link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /><link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link href="../images/favicon.ico" rel="shortcut icon" /></head><body><div id="page-header"><p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p><p class="apache">Apache HTTP Server Version 2.0</p><img alt="" src="../images/feather.gif" /></div><div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div><div id="path"><a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="../">Version 2.0</a> > <a href="./">Modules</a></div><div id="page-content"><div id="preamble"><h1>Apache Module mod_env</h1><table class="module"><tr><th><a href="module-dict.html#Description">Description:
- </a></th><td>Modifies the environment which is
-
passed to CGI scripts and SSI pages</td></tr><tr><th><a href="module-dict.html#Status">Status:
+ </a></th><td>Modifies the environment which is passed to CGI scripts and
+SSI pages</td></tr><tr><th><a href="module-dict.html#Status">Status:
</a></th><td>Base</td></tr><tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:
</a></th><td>env_module</td></tr><tr><th><a href="module-dict.html#SourceFile">Source File:
</a></th><td>mod_env.c</td></tr></table><h3>Summary</h3>
may be passed from the shell which invoked the httpd process.
Alternatively, environment variables may be set or unset within
the configuration process.</p>
-
</div><div id="quickview"><h3 class="directives">Directives</h3><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#passenv">PassEnv</a></li>
+</div><div id="quickview"><h3 class="directives">Directives</h3><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#passenv">PassEnv</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#setenv">SetEnv</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#unsetenv">UnsetEnv</a></li>
</ul><h3>See also</h3><ul class="seealso"><li><a href="../env.html">Environment Variables</a></li></ul></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="directive-section"><h2><a name="PassEnv" id="PassEnv">PassEnv</a> <a name="passenv" id="passenv">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:
</a></th><td>Passes environment variables from the shell</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
- </a></th><td><code>PassEnv
-
<em>env-variable</em> [<em>env-variable</em>] ...</code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
+ </a></th><td><code>PassEnv <var>env-variable</var> [<var>env-variable</var>]
+...</code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
</a></th><td>server config, virtual host, directory, .htaccess</td></tr><tr><th><a href="directive-dict.html#Override">Override:
</a></th><td>FileInfo</td></tr><tr><th><a href="directive-dict.html#Status">Status:
</a></th><td>Base</td></tr><tr><th><a href="directive-dict.html#Module">Module:
</a></th><td>mod_env</td></tr></table>
<p>Specifies one or more environment variables to pass to CGI
scripts and SSI pages from the environment of the shell which
- invoked the httpd process. Example:</p>
-<div class="example"><p><code>
- PassEnv LD_LIBRARY_PATH
-</code></p></div>
+ invoked the httpd process.</p>
+
+ <div class="example"><h3>Example</h3><p><code>
+ PassEnv LD_LIBRARY_PATH
+ </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="SetEnv" id="SetEnv">SetEnv</a> <a name="setenv" id="setenv">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:
</a></th><td>Sets environment variables</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
- </a></th><td><code>SetEnv <
em>env-variable value</em></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
+ </a></th><td><code>SetEnv <
var>env-variable</var> <var>value</var></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
</a></th><td>server config, virtual host, directory, .htaccess</td></tr><tr><th><a href="directive-dict.html#Override">Override:
</a></th><td>FileInfo</td></tr><tr><th><a href="directive-dict.html#Status">Status:
</a></th><td>Base</td></tr><tr><th><a href="directive-dict.html#Module">Module:
</a></th><td>mod_env</td></tr></table>
<p>Sets an environment variable, which is then passed on to CGI
- scripts and SSI pages. Example:</p>
-<div class="example"><p><code>
- SetEnv SPECIAL_PATH /foo/bin
-</code></p></div>
+ scripts and SSI pages.</p>
+
+ <div class="example"><h3>Example</h3><p><code>
+ SetEnv SPECIAL_PATH /foo/bin
+ </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="UnsetEnv" id="UnsetEnv">UnsetEnv</a> <a name="unsetenv" id="unsetenv">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:
</a></th><td>Removes variables from the environment</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
- </a></th><td><code>UnsetEnv <em>env-variable</em> [<em>env-variable</em>] ...</code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
+ </a></th><td><code>UnsetEnv <var>env-variable</var> [<var>env-variable</var>]
+...</code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
</a></th><td>server config, virtual host, directory, .htaccess</td></tr><tr><th><a href="directive-dict.html#Override">Override:
</a></th><td>FileInfo</td></tr><tr><th><a href="directive-dict.html#Status">Status:
</a></th><td>Base</td></tr><tr><th><a href="directive-dict.html#Module">Module:
</a></th><td>mod_env</td></tr></table>
<p>Removes one or more environment variables from those passed
- on to CGI scripts and SSI pages. Example:</p>
-<div class="example"><p><code>
- UnsetEnv LD_LIBRARY_PATH
-</code></p></div>
+ on to CGI scripts and SSI pages.</p>
+
+ <div class="example"><h3>Example</h3><p><code>
+ UnsetEnv LD_LIBRARY_PATH
+ </code></p></div>
</div></div><div id="footer"><p class="apache">Maintained by the <a href="http://httpd.apache.org/docs-project/">Apache HTTP Server Documentation Project</a></p><p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div></body></html>
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--><title>mod_expires - Apache HTTP Server</title><link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /><link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /><link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link href="../images/favicon.ico" rel="shortcut icon" /></head><body><div id="page-header"><p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p><p class="apache">Apache HTTP Server Version 2.0</p><img alt="" src="../images/feather.gif" /></div><div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div><div id="path"><a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="../">Version 2.0</a> > <a href="./">Modules</a></div><div id="page-content"><div id="preamble"><h1>Apache Module mod_expires</h1><table class="module"><tr><th><a href="module-dict.html#Description">Description:
- </a></th><td>Generation of
- <code>Expires</code> HTTP headers according to user-specified
- criteria</td></tr><tr><th><a href="module-dict.html#Status">Status:
+ </a></th><td>Generation of <code>Expires</code> HTTP headers according to
+user-specified criteria</td></tr><tr><th><a href="module-dict.html#Status">Status:
</a></th><td>Extension</td></tr><tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:
</a></th><td>expires_module</td></tr><tr><th><a href="module-dict.html#SourceFile">Source File:
</a></th><td>mod_expires.c</td></tr></table><h3>Summary</h3>
</div><div id="quickview"><h3 class="directives">Directives</h3><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#expiresactive">ExpiresActive</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#expiresbytype">ExpiresByType</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#expiresdefault">ExpiresDefault</a></li>
-</ul><h3>Topics</h3><ul id="topics"><li><img alt="" src="../images/down.gif" /> <a href="#AltSyn">Alternate Interval
- Syntax</a></li></ul></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="AltSyn" id="AltSyn">Alternate Interval
- Syntax</a></h2>
-
- <p>The <code class="directive"><a href="#expiresdefault">ExpiresDefault</a></code> and
+</ul><h3>Topics</h3><ul id="topics"><li><img alt="" src="../images/down.gif" /> <a href="#AltSyn">Alternate Interval Syntax</a></li></ul></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="AltSyn" id="AltSyn">Alternate Interval Syntax</a></h2>
+ <p>The <code class="directive"><a href="#expiresdefault">ExpiresDefault</a></code> and
<code class="directive"><a href="#expiresbytype">ExpiresByType</a></code> directives
can also be defined in a more readable syntax of the form:</p>
-<div class="example"><p><code>
- ExpiresDefault "<base> [plus] {<num>
+
<div class="example"><p><code>
+ ExpiresDefault "<base> [plus] {<num>
<type>}*"<br />
- ExpiresByType type/encoding "<base> [plus]
+ ExpiresByType type/encoding "<base> [plus]
{<num> <type>}*"
-</code></p></div>
+ </code></p></div>
<p>where <base> is one of:</p>
<li><code>modification</code></li>
</ul>
- <p>The '<code>plus</code>' keyword is optional. <num>
+ <p>The <code>plus</code> keyword is optional. <num>
should be an integer value [acceptable to <code>atoi()</code>],
and <type> is one of:</p>
<ul>
<li><code>years</code></li>
-
<li><code>months</code></li>
-
<li><code>weeks</code></li>
-
<li><code>days</code></li>
-
<li><code>hours</code></li>
-
<li><code>minutes</code></li>
-
<li><code>seconds</code></li>
</ul>
make documents expire 1 month after being accessed, by
default:</p>
-<div class="example"><p><code>
- ExpiresDefault "access plus 1 month"<br />
- ExpiresDefault "access plus 4 weeks"<br />
- ExpiresDefault "access plus 30 days"
-</code></p></div>
+
<div class="example"><p><code>
+ ExpiresDefault "access plus 1 month"<br />
+ ExpiresDefault "access plus 4 weeks"<br />
+ ExpiresDefault "access plus 30 days"
+ </code></p></div>
<p>The expiry time can be fine-tuned by adding several
'<num> <type>' clauses:</p>
-<div class="example"><p><code>
-ExpiresByType text/html "access plus 1 month 15
+
<div class="example"><p><code>
+ ExpiresByType text/html "access plus 1 month 15
days 2 hours"<br />
- ExpiresByType image/gif "modification plus 5 hours 3
+ ExpiresByType image/gif "modification plus 5 hours 3
minutes"
-</code></p></div>
+ </code></p></div>
<p>Note that if you use a modification date based setting, the
Expires header will <strong>not</strong> be added to content
that does not come from a file on disk. This is due to the fact
that there is no modification time for such content.</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="ExpiresActive" id="ExpiresActive">ExpiresActive</a> <a name="expiresactive" id="expiresactive">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:
- </a></th><td>Enables generation of Expires headers</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
+ </a></th><td>Enables generation of Expires
+headers</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
</a></th><td><code>ExpiresActive On|Off</code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
</a></th><td>server config, virtual host, directory, .htaccess</td></tr><tr><th><a href="directive-dict.html#Override">Override:
</a></th><td>Indexes</td></tr><tr><th><a href="directive-dict.html#Status">Status:
<code>Expires</code> header for the document realm in question.
(That is, if found in an <code>.htaccess</code> file, for
instance, it applies only to documents generated from that
- directory.) If set to <em><code>Off</code></em>, no
- <code>Expires</code> header will be generated for any document
- in the realm (unless overridden at a lower level, such as an
- <code>.htaccess</code> file overriding a server config file).
- If set to <em><code>On</code></em>, the header will be added to
- served documents according to the criteria defined by the
+ directory.) If set to <code>Off</code>, no <code>Expires</code> header
+ will be generated for any document in the realm (unless overridden at
+ a lower level, such as an <code>.htaccess</code> file overriding a
+ server config file). If set to <code>On</code>, the header will be
+ added to served documents according to the criteria defined by the
<code class="directive"><a href="#expiresbytype">ExpiresByType</a></code> and
<code class="directive"><a href="#expiresdefault">ExpiresDefault</a></code> directives
(<em>q.v.</em>).</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="ExpiresByType" id="ExpiresByType">ExpiresByType</a> <a name="expiresbytype" id="expiresbytype">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:
</a></th><td>Value of the Expires header configured
by MIME type</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
- </a></th><td><code>ExpiresByType
-
<em>MIME-type <code>seconds</em></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
+ </a></th><td><code>ExpiresByType <var>MIME-type</var>
+
<var><code>seconds</var></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
</a></th><td>server config, virtual host, directory, .htaccess</td></tr><tr><th><a href="directive-dict.html#Override">Override:
</a></th><td>Indexes</td></tr><tr><th><a href="directive-dict.html#Status">Status:
</a></th><td>Extension</td></tr><tr><th><a href="directive-dict.html#Module">Module:
</a></th><td>mod_expires</td></tr></table>
<p>This directive defines the value of the <code>Expires</code>
- header generated for documents of the specified type
- (<em>e.g.</em>, <code>text/html</code>). The second argument
- sets the number of seconds that will be added to a base time to
- construct the expiration date.</p>
+ header generated for documents of the specified type (<em>e.g.</em>,
+ <code>text/html</code>). The second argument sets the number of
+ seconds that will be added to a base time to construct the expiration
+ date.</p>
<p>The base time is either the last modification time of the
file, or the time of the client's access to the document. Which
should be used is specified by the
- <code><em><code></em></code> field; <strong>M</strong>
+ <code><var><code></var></code> field; <code>M</code>
means that the file's last modification time should be used as
- the base time, and <strong>A</strong> means the client's access
+ the base time, and <code>A</code> means the client's access
time should be used.</p>
- <p>The difference in effect is subtle. If <em>M</em> is used,
+ <p>The difference in effect is subtle. If <code>M</code> is used,
all current copies of the document in all caches will expire at
the same time, which can be good for something like a weekly
- notice that's always found at the same URL. If <em>A</em> is
+ notice that's always found at the same URL. If <code>A</code> is
used, the date of expiration is different for each client; this
can be good for image files that don't change very often,
particularly for a set of related documents that all refer to
the same images (<em>i.e.</em>, the images will be accessed
repeatedly within a relatively short timespan).</p>
- <p><strong>Example:</strong></p>
-<div class="example"><p><code>
-# enable expirations<br />
-ExpiresActive On<br />
-# expire GIF images after a month in the client's cache<br />
-ExpiresByType image/gif A2592000<br />
-# HTML documents are good for a week from the time they were changed<br />
-ExpiresByType text/html M604800
-</code></p></div>
+ <div class="example"><h3>Example:</h3><p><code>
+ # enable expirations<br />
+ ExpiresActive On<br />
+ # expire GIF images after a month in the client's cache<br />
+ ExpiresByType image/gif A2592000<br />
+ # HTML documents are good for a week from the<br />
+ # time they were changed<br />
+ ExpiresByType text/html M604800
+ </code></p></div>
<p>Note that this directive only has effect if
<code>ExpiresActive On</code> has been specified. It overrides,
this document.</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="ExpiresDefault" id="ExpiresDefault">ExpiresDefault</a> <a name="expiresdefault" id="expiresdefault">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:
</a></th><td>Default algorithm for calculating expiration time</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
- </a></th><td><code>ExpiresDefault <
em><code>seconds</em></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
+ </a></th><td><code>ExpiresDefault <
var><code>seconds</var></code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
</a></th><td>server config, virtual host, directory, .htaccess</td></tr><tr><th><a href="directive-dict.html#Override">Override:
</a></th><td>Indexes</td></tr><tr><th><a href="directive-dict.html#Status">Status:
</a></th><td>Extension</td></tr><tr><th><a href="directive-dict.html#Module">Module:
<tr><td><a href="core.html#errorlog"> ErrorLog <var>file-path</var>|syslog[:<var>facility</var>]</a></td><td> logs/error_log (Uni +</td><td>sv</td><td>C</td></tr><tr><td class="descr" colspan="4">Location where the server will log errors</td></tr>
<tr class="odd"><td><a href="mod_example.html#example">Example</a></td><td /><td>svdh</td><td>X</td></tr><tr class="odd"><td class="descr" colspan="4">Demonstration directive to illustrate the Apache module
API</td></tr>
-<tr><td><a href="mod_expires.html#expiresactive">ExpiresActive On|Off</a></td><td /><td>svdh</td><td>E</td></tr><tr><td class="descr" colspan="4">Enables generation of <code>Expires</code> headers</td></tr>
-<tr class="odd"><td><a href="mod_expires.html#expiresbytype">ExpiresByType
- <em>MIME-type <code>seconds</em></a></td><td /><td>svdh</td><td>E</td></tr><tr class="odd"><td class="descr" colspan="4">Value of the <code>Expires</code> header configured
+<tr><td><a href="mod_expires.html#expiresactive">ExpiresActive On|Off</a></td><td /><td>svdh</td><td>E</td></tr><tr><td class="descr" colspan="4">Enables generation of <code>Expires</code>
+headers</td></tr>
+<tr class="odd"><td><a href="mod_expires.html#expiresbytype">ExpiresByType <var>MIME-type</var>
+<var><code>seconds</var></a></td><td /><td>svdh</td><td>E</td></tr><tr class="odd"><td class="descr" colspan="4">Value of the <code>Expires</code> header configured
by MIME type</td></tr>
-<tr><td><a href="mod_expires.html#expiresdefault">ExpiresDefault <em><code>seconds</em></a></td><td /><td>svdh</td><td>E</td></tr><tr><td class="descr" colspan="4">Default algorithm for calculating expiration time</td></tr>
+<tr><td><a href="mod_expires.html#expiresdefault">ExpiresDefault <var><code>seconds</var></a></td><td /><td>svdh</td><td>E</td></tr><tr><td class="descr" colspan="4">Default algorithm for calculating expiration time</td></tr>
<tr class="odd"><td><a href="mod_status.html#extendedstatus">ExtendedStatus On|Off</a></td><td> Off </td><td>s</td><td>B</td></tr><tr class="odd"><td class="descr" colspan="4">Keep track of extended status information for each
request</td></tr>
<tr><td><a href="mod_ext_filter.html#extfilterdefine">ExtFilterDefine <em>filtername</em> <em>parameters</em></a></td><td /><td>s</td><td>X</td></tr><tr><td class="descr" colspan="4">-</td></tr>
<tr class="odd"><td><a href="mod_authz_host.html#order"> Order <em>ordering</em></a></td><td> Deny,Allow </td><td>dh</td><td>B</td></tr><tr class="odd"><td class="descr" colspan="4">Controls the default access state and the order in which
<code class="directive">Allow</code> and <code class="directive">Deny</code> are
evaluated.</td></tr>
-<tr><td><a href="mod_env.html#passenv" id="P" name="P">PassEnv
- <em>env-variable</em> [<em>env-variable</em>] ...</a></td><td /><td>svdh</td><td>B</td></tr><tr><td class="descr" colspan="4">Passes environment variables from the shell</td></tr>
+<tr><td><a href="mod_env.html#passenv" id="P" name="P">PassEnv <var>env-variable</var> [<var>env-variable</var>]
+...</a></td><td /><td>svdh</td><td>B</td></tr><tr><td class="descr" colspan="4">Passes environment variables from the shell</td></tr>
<tr class="odd"><td><a href="mpm_common.html#pidfile">PidFile <var>filename</var></a></td><td> logs/httpd.pid </td><td>s</td><td>M</td></tr><tr class="odd"><td class="descr" colspan="4">File where the server records the process ID
of the daemon</td></tr>
<tr><td><a href="mod_echo.html#protocolecho">ProtocolEcho On|Off</a></td><td /><td>sv</td><td>X</td></tr><tr><td class="descr" colspan="4">Turn the echo server on or off</td></tr>
<tr class="odd"><td><a href="core.html#serverroot">ServerRoot <var>directory-path</var></a></td><td> /usr/local/apache </td><td>s</td><td>C</td></tr><tr class="odd"><td class="descr" colspan="4">Base directory for the server installation</td></tr>
<tr><td><a href="core.html#serversignature">ServerSignature On|Off|EMail</a></td><td> Off </td><td>svdh</td><td>C</td></tr><tr><td class="descr" colspan="4">Configures the footer on server-generated documents</td></tr>
<tr class="odd"><td><a href="core.html#servertokens">ServerTokens Major|Minor|Minimal|ProductOnly|OS|Full</a></td><td> Full </td><td>s</td><td>C</td></tr><tr class="odd"><td class="descr" colspan="4">Configures the Server HTTP response header</td></tr>
-<tr><td><a href="mod_env.html#setenv">SetEnv <em>env-variable value</em></a></td><td /><td>svdh</td><td>B</td></tr><tr><td class="descr" colspan="4">Sets environment variables</td></tr>
+<tr><td><a href="mod_env.html#setenv">SetEnv <var>env-variable</var> <var>value</var></a></td><td /><td>svdh</td><td>B</td></tr><tr><td class="descr" colspan="4">Sets environment variables</td></tr>
<tr class="odd"><td><a href="mod_setenvif.html#setenvif">SetEnvIf <em>attribute
regex [!]env-variable</em>[=<em>value</em>]
[[!]<em>env-variable</em>[=<em>value</em>]] ...</a></td><td /><td>svdh</td><td>B</td></tr><tr class="odd"><td class="descr" colspan="4">Sets environment variables based on attributes of the request
certain events before failing a request</td></tr>
<tr class="odd"><td><a href="mod_log_config.html#transferlog">TransferLog <em>file</em>|<em>pipe</em></a></td><td /><td>sv</td><td>B</td></tr><tr class="odd"><td class="descr" colspan="4">Specifly location of a log file</td></tr>
<tr><td><a href="mod_mime.html#typesconfig">TypesConfig <em>file-path</em></a></td><td> conf/mime.types </td><td>s</td><td>B</td></tr><tr><td class="descr" colspan="4">The location of the mime.types file</td></tr>
-<tr class="odd"><td><a href="mod_env.html#unsetenv" id="U" name="U">UnsetEnv <em>env-variable</em> [<em>env-variable</em>] ...</a></td><td /><td>svdh</td><td>B</td></tr><tr class="odd"><td class="descr" colspan="4">Removes variables from the environment</td></tr>
+<tr class="odd"><td><a href="mod_env.html#unsetenv" id="U" name="U">UnsetEnv <var>env-variable</var> [<var>env-variable</var>]
+...</a></td><td /><td>svdh</td><td>B</td></tr><tr class="odd"><td class="descr" colspan="4">Removes variables from the environment</td></tr>
<tr><td><a href="core.html#usecanonicalname">UseCanonicalName on|off|dns</a></td><td> on </td><td>svd</td><td>C</td></tr><tr><td class="descr" colspan="4">Configures how the server determines its own name and
port</td></tr>
<tr class="odd"><td><a href="mpm_common.html#user">User <var>unix-userid</var></a></td><td> #-1 </td><td>sv</td><td>M</td></tr><tr class="odd"><td class="descr" colspan="4">The userid under which the server will answer
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