How can mod_rewrite and .htaccess be used to redirect to a file if it exists?

To redirect to a file if it exists using mod_rewrite and .htaccess, you can first check if the requested file exists on the server using RewriteCond %{REQUEST_FILENAME} -f. If the file exists, you can then use RewriteRule to redirect the request to that file. This can be useful for creating clean URLs or handling specific file redirects. ```apache RewriteEngine On RewriteCond %{REQUEST_FILENAME} -f RewriteRule ^(.*)$ /path/to/your/file/$1 [L] ```