dieterh a) how can I (as a DokuWiki administrator) get a list of currently logged-in D/W users?
You can't
dieterh b) in what files is login information stored?
In a cookie client side. Or are you asking where user information and passwords are stored? It depends on your auth backend. By default with authplain
they are in users.auth.php
dieterh c) by what method does D/W encrypt user passwords?
See https://www.dokuwiki.org/config:passcrypt
dieterh d) is there a wizard by which one can migrate an existing D/W installation with many pages into a farm?
The wizard is called mv
- you can always just move stuff on the file system.
I am locking this thread. In the future open one thread per topic.