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# install gcc make
sudo apt-get install -y gcc make libssl-dev libreadline-dev zlib1g-dev

# install rbenv ruby-build ruby2.3.1
if [ ! -e ~/.rbenv ]; then
  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

  cat <<'EOT' >> ~/.bash_profile
if [ -e ~/.rbenv ]; then
  export PATH="$HOME/.rbenv/bin:$PATH"
  eval "$(rbenv init -)"
fi
EOT

  source ~/.bash_profile
fi

# install ruby
source ~/.bash_profile
version="2.3.1"
rbenv install $version
rbenv rehash
rbenv global $version
sudo apt-get update
sudo apt-get install ruby-dev ruby2.3-dev