ubuntu_ruby_dev_setup.bash

#!/usr/bin/env bash

setup_os_packages()
{
  echo "Updating OS packages and install prerequisite packages"
  sudo apt-get update && sudo apt-get -y upgrade && sudo apt-get -y install build-essential postgresql libpq-dev git
}

setup_ruby_install()
{
  echo "Installing ruby-install"
  mkdir -p ~/src
  cd ~/src
  wget -O ruby-install-0.6.0.tar.gz https://github.com/postmodern/ruby-install/archive/v0.6.0.tar.gz
  tar -xzvf ruby-install-0.6.0.tar.gz
  cd ruby-install-0.6.0/
  sudo make install
}

setup_chruby_install()
{
  echo "Installing chruby"
  cd ~/src
  wget -O chruby-0.3.9.tar.gz https://github.com/postmodern/chruby/archive/v0.3.9.tar.gz
  tar -xzvf chruby-0.3.9.tar.gz
  cd chruby-0.3.9/
  sudo make install
}

chruby_system_config()
{
  cat<<EOF
source /usr/local/share/chruby/chruby.sh
source /usr/local/share/chruby/auto.sh
EOF
}

add_chruby_to_profile()
{
  local profile_path="$HOME/.bashrc"
  if [ -f $profile_path ]
  then
    echo "Adding chruby to $profile_path"
    chruby_system_config >> $profile_path
  fi
}

install_ruby()
{
  echo "Installing ruby 2.3.0"
  ruby-install ruby 2.3.0
}

install_bundler()
{
  echo "Installing bundler gem"
  source /usr/local/share/chruby/chruby.sh
  chruby 2.3.0
  gem install bundler --no-rdoc --no-ri
}

main()
{
  setup_os_packages
  setup_ruby_install
  setup_chruby_install
  add_chruby_to_profile
  install_ruby
  install_bundler
}
main