Forcing example.com and not www.example.com

getting ride of duplicate content

[niki_man]

In a effort to get rid of duplicate content...

How do I the search engins to go permanently from: http://www.example.com/content-1232.html
to
http://example.com/content-1232.html

This is my .htaccess

RewriteEngine on
RewriteRule ^content(.*)\.html$ /index.php?id=$1";
$htaccessban = " 
<Limit GET> 
order deny,allow 
deny from d.example.com 
deny from f.example.com 
deny from g.example.com 
</Limit> 
ErrorDocument 404 /

I tried all the modrewrite codes mentioned in
[webmasterworld.com...] . But nothing worked.

[edited by: ciml at 11:33 am (utc) on July 13, 2005]
[edit reason] Examplified [/edit]

[Clint]

I don't know if you tried this or not, but it worked for me on one of my domains where the non-www had a higher PR than the www version. So, this directs www to non-www:

RewriteEngine on
RewriteCond %{HTTP_HOST}!^MyDomain\.com
RewriteRule (.*) [MyDomain.com...] [R=301,L]

This is on Linux/Apache and cPanel's htaccess file.

[niki_man]

I'll give that a try... then report back...

[Swebbie]

Does anyone know if using the following two sections of the 301 code are identical?

[R=301,L]

[R=permanent,L]

Are they interchangeable? Thanks!

[jtbell]

Yes, they're interchangeable, according to the Apache manual. You can also use appropriate words instead of the letters for the flags:

[redirect=permanent,last]

[jd01]

You might find better answers in the Apache Forum [webmasterworld.com].

I would guess someone there would notice the correct rewrite for this:

RewriteEngine on
RewriteCond %{HTTP_HOST} !^MyDomain\.com
RewriteRule (.*) http://MyDomain.com/$1 [R=301,L]

Is actually this:
RewriteEngine on
RewriteCond ${HTTP_HOST} .
RewriteCond %{HTTP_HOST} !^MyDomain\.com
RewriteRule (.*) http://MyDomain.com/$1 [R=301,L]

If the top line, which checks for any single character in the HOST header to indicate that the browser is capable of sending the appropriate header, is not added HTTP 1.0 clients (or others) that do not send HOST headers will get caught in an infinite loop, becuase their HOST will always be !(not) MyDomain.com, as it is empty.

Justin