How to change path in .htaccess address bar?

Question

htaccess

Tell me how to change let from /page?action=page1 to /page/page1
, taking into account that page1 changes depending on the GET request.

Answer 1

RewriteCond %{QUERY_STRING} (?:^|&)action=([^&]*)
RewriteRule ^(page)$ /$1/%1? [R=301,L]