I have installed Mediawiki on NAS and Wordpress on Ubuntu-sever. I need to convert the entire mediawiki site to wordpress format and run on Ubuntu. Thanks.
I am not sure how well this works, but Wordpress has a plugin to do this for you. Let us know how it went!
Running Wordpress on Ubuntu should be easy enough if you have a PHP enabled webserver with a MySQL database. You can follow the installation instructions provided by Wordpress, they are excellent.