Redirect only WordPress homepage with a 301 redirect

Question

I have a blog, lets say example.com and another blog installed in example.com/np which is not multisite but a different WordPress installation.

Answer 1

Just put this at the very top of your index.php file of your wordpress installation:

if($_SERVER['REQUEST_URI'] == "/"){
    include('......server file directory to file you want to redirect to');
    exit;
}