.htaccess redirect all pages to new domain

Question

Which redirect rule would I use to redirect all pages under olddomain.example to be redirected to newdomain.example?

The site has a totally

Answer 1

I've used for my Wordpress blog this as .htaccess. It converts http://www.blah.example/asad, http://blah.example/asad, http://www.blah.example2/asad etc, to http://blah.example/asad Thanks to all other answers I figured this out.

RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} !^YOURDOMAIN\.example$ [NC]
RewriteRule ^/(.*)$ https://YOURDOMAIN.example/$1 [R=301,L]

RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]