将旧网址重定向到新的子域

Question

I have a blog under example.com/blog , but now I changed to blog.example.com , which redirects to the same old folder.

I don't want users to access directly the old URL, so, redirecting /blog to blog. How can I do it?

I would prefer using .htaccess. Current is WordPress default:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Answer 1

You can try this

    RewriteRule ^blog/(.*)$ http://blog.example.com/$1 [R=301,L]

or You could do something like this that would check from the main domain - This checks if you are already at blog.example.com otherwise it will redirect.

    RewriteCond %{HTTP_HOST} !^blog\.example\.com$ [NC] 
    RewriteRule ^blog/$ http://blog.example.com [L,NC,R=301]