Modalias

mod_alias manipulates the URLs of incoming HTTP requests, such as redirecting a client request to another URL. It also can map a part of the file system into your web hierarchy. For example,

Alias /images/ /home/wsb/graphics/

fetches contents from the /home/wsb/graphics directory for any URL that starts with /images/. This is done without the client knowing anything about it. If you use a redirection, the client is instructed to go to another URL to find the requested content. More advanced URL manipulation can be accomplished with mod_rewrite.

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