Question

I have some simple redirects in my htaccess file. However, the domain is going to change…I was hoping I could write something that gets the domain name?

Someone suggested:

 http://%{HTTP_HOST}/

but this doesn’t work.

Answer 1

If you want to keep the old domain and redirect all the requests to the new one, may this instruction be helpful:

RewriteEngine On 
RewriteCond %{HTTP_HOST} ^old-domain.com$ [NC,OR]
RewriteCond %{HTTP_HOST} ^www.old-domain.com$ [NC]
RewriteRule ^(.*)$ http://www.new-domain.com/$1 [L,R=301]

Put the code above in a .htaccess file at the root of old-domain.

But if you are NOT worried about the old url addresses or search engines crawled your old pages, you won’t need to do that, just move all your data (including .htaccess file) to your new domain