mod_rewrite infinite loop problem

I've been trying to do the following with mod_rewrite

1. on the server there is a file about.htm (which is found in the root directory of the domain)
2. I need to redirect about.htm to about/
3. On the server still keep about.htm, hence when about/ is called, it actually loads up about.htm

I tried something like this:

RewriteRule ^about/$       about.htm [L]
RewriteRule ^about\.htm$   about/    [R=302]

I also tried changing it a bit and see what happends, but I always end 开发者_如何学Goup with an infinite loop of redirection or a 500 server error.

Any idea why it's not working as intended?

Thanks in advance!

You need to test the path in the request line:

RewriteRule ^about/$       about.htm [L]
RewriteCond %{THE_REQUEST} ^GET\ /about\.htm
RewriteRule ^about\.htm$   about/    [R=302]

Only this line should do the work.

RewriteRule ^about\.htm$   http://yourdomain.com/about/    [R=302]