install-jenkins-macos.sh

# Installation Jenkins:
brew update && brew install jenkins
  
# Java Runtime Environment:
brew cask install java
  
# Config Launch:  
ln -sfv /usr/local/opt/jenkins/*.plist ~/Library/LaunchAgents
sudo cp -fv /usr/local/opt/jenkins/*.plist /Library/LaunchDaemons
sudo chown `whoami` /Library/LaunchDaemons/homebrew.mxcl.jenkins.plist

# Start
/usr/local/bin/jenkins


# Source: http://flummox-engineering.blogspot.com/2016/01/installing-jenkins-os-x-homebrew.html

For Permission Homebrew
brew sudo chown -R $(whoami) /usr/local

For Java version (Cask):
brew update
brew tap caskroom/cask
brew install brew-cask
brew update && brew upgrade brew-cask && brew cleanup && brew cask cleanup
brew tap caskroom/versions
brew cask info java7