url rewrites dynamic urls redirects - Magento

Question

I'm looking for htaccess lines that do the following

Redirect old existing urls to new url (301)

Example www.example.com/categorya/categoryb/product.htm

TO

www.example.com/product.htm

There can be more category parts, or less, it all has to go to /product.htm (Magento).

Who can help?

Answer 1

Try putting these rules in the htaccess file in your document root, preferably above any rules that you may already have there:

RewriteEngine On
RewriteRule ^(.+)/product.htm$ /product.htm [L,R=301]

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Try:

RewriteEngine On
RewriteRule ^[^/]+/[^/]+/([^.]+)\.htm$ /$1.htm [L,R=301]