On any recent distro the following command (or equivalent) will leave you with a fully functional jenkins on port 8080:

   apt-get install jenkins

From there you open the web interface and click on 'New job'...

How you'd spend 'many hours' on that is beyond me.

The whole "hours of pain thing", first begins when you press "New job". I set up my first Jenkins build server a week ago and I spent about 10 hours googling cryptic error messages, when trying to configure the build.

So first it begins with the installation, now it begins after installation...

I have a strong feeling someone is trolling here.

Can you paste some of these 'cryptic error messages' that you were getting?

Dude these are your own words: "Installing jenkins and adding a job".

Those are two different people...

Not really. It has a Debian/Ubuntu repository. A couple of commands and then it's literally "sudo apt-get install jenkins"

Installing Java is a matter of minutes and you probably already have it in your system.

Then you have many platform specific packages or you can just download the war and run "java -jar jenkins.war".