• sudo launchctl load /Library/LaunchDaemons/org.jenkins-ci.plist
• sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist
• Change Port: sudo defaults write /Library/Preferences/org.jenkins-ci httpPort 5757

http://goodliffe.blogspot.com/2011/09/how-to-set-up-jenkins-ci-on-mac.html

• Edit /Library/LaunchDaemons/org.jenkins-ci.plist*, change the username entry from daemon to jenkins
• Change all permissions on the existing jenkins files:
  • sudo chown -R [USER_NAME] /User/Shared/jenkins
  • sudo chgrp -R [GROP_NAME] /User/Shared/Jenkins"
  • sudo chown -R [USER_NAME] /var/log/jenkins [Optiona]
  • chown -R [USER_NAME] /var/lib/jenkins
  • chown -R [USER_NAME] /var/run/jenkins
  • chown -R [USER_NAME] /var/cache/jenkins

###Launchd is not starting Jenkins server on OS X Yosemite http://stackoverflow.com/questions/26483089/launchd-is-not-starting-jenkins-server-on-os-x-yosemite

• sudo chmod 777 /var/log/jenkins
• sudo chmod 777 /Users/Shared/Jenkins/
• sudo chmod 777 /Users/Shared/Jenkins/tmp/