Despite the error message in my post yesterday,
I successfully installed dotlrn. Thanks Otto!
What I did (for those who may have found installation problems):
1. apt-get --purge remove aolserver4 (it will also purge and remove a previous dotlrn installation)
if a previous installation try failed you should drop the postgres dotlrn database and user:
su - postgres dropdb dotlrn
su - postgres dropuser www-data
2. apt-get install dotlrn
I did a localhost installation on port 8000
(for a network installation you'll have to edit
the postgres config file pg_hba.conf, as stated in
the proper dialog box)
3.After the command that tries to create again the database
user www-data, start the dotlrn aolserver as stated:
/etc/init.d/dotlrn start
4.In your browser point to
http://localhost:8000/
You will get the web based dotlrn installation page.
After the dotlrn database filling process, the dotlrn aolserver shutsdown and you have to restart it as above
5. set your browser URL to:
http://localhost:8000/dotlrn
and you will get the dotlrn login page