Module loaded(if statement)?

Hi,

How can I check using IF statements if the module is present before applying the configuration rule or before installing it?

Thanks.

 

<IfMododule .......> .. your stuff ... </IfModule>

See http://httpd.apache.org/docs/2.0/mod/core.html#ifmodule

 

Be careful. Just because a module is loaded, doesn't mean any part of it is actually active.

An example of what I mean can be seen with this bit I use to enable support for pre-compressed gzip requests.

<IfModule !deflate_module>
	<IfModule headers_module>
		<IfModule rewrite_module>
			<FilesMatch "\.html\.gz$">
				Header set Content-Encoding gzip
				AddType text/html gz
			</FilesMatch>
		
			RewriteEngine On
			RewriteCond %{HTTP:accept-encoding} gzip
			RewriteCond %{REQUEST_FILENAME}.gz -f
			RewriteRule \.html$ %{REQUEST_URI}.gz
		</IfModule>
	</IfModule>
</IfModule>

Code (markup):

Because the directives mod_deflate makes available can conflict with my pre-compressed files, essentially double-compressing them, I have to make sure mod_deflate isn't active before I allow the pre-compressed versions to be used. However, !deflate_module only tells me that mod_deflate is not loaded. It could be possible that mod_deflate is loaded, but none of the conflicting confituration options are active, meaning it would be safe for me to comment out the <IfModule !deflate_module> bit.

 

Thanks a lot...