Im confortable more in searching than investing my time, what about You?
So here is the command to redirect all subpages of a domain to one page
RewriteEngine On
RewriteCond %{REQUEST_URI} !=/index.php
RewriteRule .* /index.php
you can choose any other file instead of homepage (index.php)
Add these above 3 lines into your .htaccess file (yourdomain.tld/.htaccess)
---------------------------
If you need to redirect all subpages to another new domain while retaining subpage address, (htaccess old domain to new domain), You can use this command in your htaccess:
RedirectMatch 301 (.*) http://yournewdomain.com$1
Downside of above redirect: it will redirect yourOLDdomain.com/somesubpage to yourNEWdomain.com/somesubpage
---------------------------
If you need to redirect yourNEWdomain.com/somesubpage to yourNEWdomain.com do this htaccess command:
RedirectMatch 301 / http://yournewdomain.com
