Jenkins on Mac
Step 1 : Download installer for Mac from https://jenkins.io/ .Then run the installer file.
Step 2 : After complete install, you access Jenkins at http://localhost:8080/
Step 3 : Open file /Users/Shared/Jenkins/Home/secrets/initialAdminPassword and copy password use for unlock Jenkins
Step 4 : Click on Install suggested plugins
Step 5 : Enter your user name, password for a new admin.
Step 6 : That it, now jenkins ready to use, click to Start using Jenkins
From now Jenkins already installed in Mac as a service, so every time you power on machine, Jenkins will start and ready to access at http://localhost:8080/