mod rewrite question for canonical issues

mod_rewrite canonical

[chazeo]

OK, so I need to generate the code to create a 301 redirect from a www version of a website to a non-www version. I found this code which works well for the opposite case (non-www to www). Can alyone help me rewrite this to make the opposite condition true?

code:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST}!^www\.domain\.com$
RewriteRule ^(.*)$ [domain.com...] [R=301,L]
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /(([^/]+/)*)index\.html\ HTTP/
RewriteRule index\.html$ [domain.com...] [R=301,L]
</IfModule>

[phranque]

please refer to jdMorgan's response in this thread for the htaccess url canonicalization library [webmasterworld.com].
after making some minor tweaks to your code, try it and report on your results.