Install Ruby (default 2.2) with Readline and latest OpenSSL (環境管理ツールのrbenvを作成する)

install-ruby-2_5_1-with_rbenv.sh

#!/usr/bin/env sh
echo '# Update the newest brew tool'
brew update

echo '# Upgrade any that were already installed'
brew upgrade rbenv ruby-build readline openssl

echo "# Install what's missing"
brew install rbenv ruby-build readline openssl

echo '# Set up rbenv in your shell'
rbenv init

echo '# Initial Ruby environment tool into OS shell'
cp ~/.bash_profile ~/.bash_profile.bak
echo '# Initial Ruby environment tool' >> ~/.bash_profile
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
source ~/.bash_profile

echo '# Verify that rbenv is properly set up using this rbenv-doctor script'
curl -fsSL https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-doctor | bash

echo '# Build with Readline and OpenSSL'
env RUBY_CONFIGURE_OPTS=--with-openssl-dir=`brew --prefix openssl` CONFIGURE_OPTS=--with-readline-dir=`brew --prefix readline` 
rbenv install 2.5.1

echo '# Active the build'
rbenv global 2.5.1
echo '$ which rbenv'
which rbenv
echo '$ which gem'
which gem
echo '$ gem which rubygems'
gem which rubygems

echo '# Test the SSL'
ruby -rnet/https -e "Net::HTTP.get URI('https://github.com')"
if [ $? -eq 0 ]
  then
  echo 'HTTPS working'
else
  echo 'HTTPS not working! Repair it...'
  echo '# If the above fails, follow this solution'
  open http://railsapps.github.com/openssl-certificate-verify-failed.html
fi

echo '# Install ruby gem'
gem install bundler