MAC上更攺jenkins默认安装目录

/Library/LaunchDaemons  
#编缉里面的jenkinshome和username  
sudo vim org.jenkins-ci.plist  
#然后  
sudo launchctl unload -w /Library/LaunchDaemons/org.jenkins-ci.plist  
sudo launchctl load -w /Library/LaunchDaemons/org.jenkins-ci.plist