依次執行下列命令就可以卸載mac上的jenkins

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