[SOLVED] Web Interface does not react on Ubuntu

I just migrated from Windows to Ubuntu and I got the demo running so I can see the Web Interface.
If I start in the debug mode in Windows I saw the log entries when using a switche on the Interface. Now in Ubuntu I cannot see this in the terminal. Is that normal?

My first goal is to include a simple switch that sends a udp message out to a ip and port.

Thanks Andreas

This helped. You have to acces the openhab user and tail the log file.
Even if you start it from root it is executed under openHAB.