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From Dave Ingram <>
Subject Re: Making mod_auth_digest mysql
Date Fri, 06 Feb 2009 10:54:58 GMT
The -f and -d flags for RewriteCond are for checking the file system,
not environment variables, although they can use environment variables
if necessary. For example:

RewriteCond %{DOCUMENT_ROOT}/%{ENV:foo} -d

would check that the folder named by the environment variable "foo"
exists in the document root.


Michele Waldman wrote:
> RewriteCond has flags -f -d ...
> But not -e for exists.
> It looks like:
> RewriteCond ${REMOTE_USER} !="" always evaluates to true if REMOTE_USER does
> not exist.  Am I wrong?
> I'm thinking about adding a -e flag for environment variable does not exist
> to httpd on my server.  It would return true if the variable exists or
> false, otherwise.
> Is there a way to already do this?
> Thoughts?
> Michele

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