How to uninstall Jenkins on Mac ?

sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist
sudo rm !$
sudo rm -rf /Applications/Jenkins "/Library/Application Support/Jenkins" /Library/Documentation/Jenkins
sudo rm -rf /Users/Shared/Jenkins
# if you want to get rid of all the jobs and builds:
sudo dscl . -delete /Users/jenkins
# delete the jenkins user and group (if you chose to use them):
sudo dscl . -delete /Groups/jenkins

　　

[From]

http://stackoverflow.com/questions/11608996/how-to-uninstall-jenkins