On Debian-based distributions, such as Ubuntu, you can install Jenkins through
Recent versions are available in an apt repository, please see this post for further details.
wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
sudo echo "deb http://pkg.jenkins-ci.org/debian binary/" > /etc/apt/sources.list.d/jenkins.list
sudo aptitude update
sudo aptitude install jenkins
/etc/init.d/jenkinsfor more details.
jenkins' user is created to run this service.
/var/log/jenkins/jenkins.log. Check this file if you are troubleshooting Jenkins.
/etc/default/jenkinswill capture configuration parameters for the launch.