htaccess 301 Redirect with URI

Question

How can I write a .htaccess mod_rewrite rule to redirect all traffic to a specific subfolder to a different subdomain, but include all the trailing URI and url structure and in a SEO friendly way.

ie.

www.site.com/photogallery/2010/January-Spring-Photos/

-to-

photos.site/2010/January-Spring-Photos/

Answer 1

You can put this into the root's .htaccess:

RewriteEngine On
RewriteRule ^photogallery/(.*)$ http://photos.site.com/$1 [L,R=301,QSA]