.htaccess subdomain redirect

[Tree]

How can I redirect a subdomain using .htaccess? I've Googled, and found nothing relevant. I suspect it has something to do with mod_rewrite?

 

[Eric]

Something like this?

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

 

[Tree]

I'll try it. Thanks 2v.