El Capitan 10.11 GM で Ruby on Rails の環境を作る ref: http://qiita.com/puzzel/items/78638944ec2b0ffccb1b

file0.txt

sudo xcodebuild -license

file1.txt

$ xcode-select --install
$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
$ brew doctor
$ brew update

file10.txt

$ rbenv exec gem install bundler
$ rbenv rehash

file11.txt

$ bundle install

file12.txt

$ gem install libv8-3.16.14.11-x86_64-darwin-15.gem
$ gem install therubyracer

file13.txt

bx rails s

file14.txt

csrutil enable

file2.txt

$ git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
$ mkdir -p ~/.rbenv/plugins
$ git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build

export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"

file3.txt

$ source ~/.zshrc

file4.txt

$ brew install openssl

file5.txt

$ brew install readline

file6.txt

$ RUBY_CONFIGURE_OPTS="--with-readline-dir=$(brew --prefix readline) --with-openssl-dir=$(brew --prefix openssl)" rbenv install 2.1.2 #

file7.txt

$ brew tap homebrew/dupes
$ brew install apple-gcc42
$ export CC=/usr/local/Cellar/apple-gcc42/4.2.1-5666.3/bin/gcc-4.2
$ export CXX=/usr/local/Cellar/apple-gcc42/4.2.1-5666.3/bin/g++-4.2
$ export CPP=/usr/local/Cellar/apple-gcc42/4.2.1-5666.3/bin/cpp-4.2

file8.txt

$ rbenv versions

file9.txt

$ rbenv global 2.1.2