.htaccess 301 redirect old domain sub-folder without root domain access to new domain root

Question

I am trying to move my website from a domain and server where I am just a user to a domain that I control.

I want to redirect every request at http://www.olddomain.com/~username/ to http://www.newdomain.com/ - and I only have access to ~username on the server.

Everything I try ends up at http://www.newdomain.com/~username/

1)

Redirect 301 / http://www.newdomain.com/

2)

Redirect 301 /~username/ http://www.newdomain.com/

3)

RewriteEngine on
RewriteBase /
RewriteRule ^~username/(.*)$ http://www.newdomain.com/$1 [R=301,NC,L]

4)

RewriteEngine on
RewriteBase /~username/
RewriteRule ^(.*)$ http://www.newdomain.com/$1 [R=301,NC,L]

I would probably prefer to redirect everything to just http://www.newdomain.com/index.html , but for the sake of completeness please also show how to redirect to a matching URL on the new server.

Apache mod_rewrite docs:

https://httpd.apache.org/docs/current/mod/mod_rewrite.html

Answer 1

Per @Capsule's comment, I just needed to clear the cache in my browser. Refreshing the page / revisiting the old domain is not sufficient.

Firefox -> History -> Clear Recent History... -> Last Hour