如果没有jenkins用户，需要用jenkins用户登录一下。如果登录界面也没有，需要自己手动创建一个。
Stop the jenkins server：
sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plistAdd execute permissions to org.jenkins-ci.plist:
sudo chmod +x /Library/LaunchDaemons/org.jenkins-ci.plistSet jenkins as the owner of /var/log/jenkins:
sudo chown jenkins /var/log/jenkinsStart Jenkins:
sudo launchctl load /Library/LaunchDaemons/org.jenkins-ci.plist
此步骤可能需要执行：
sudo chown -R jenkins /Users/Shared/Jenkins
有可能会出现git访问权限问题，需要设置ssh中文件权限：
sudo chown jenkins *
sudo chmod 600 *
