Installing a Ruby workstations from scratch on OS X (last used on El Capitan)

ruby_osx_setup.sh

#!/bin/bash
#
# \curl https://gist.githubusercontent.com/ppdeassis/601d9191c76337b94909/raw/92f4af629ee7d8d58022c4711b77e1fbd0f560e4/ruby_osx_setup.sh | bash
#
# If any command fails, we should immediately fail too
set -e

#
#

add_to_bash_profile() {
  local line="$1"
  if ! grep --quiet "$line" ~/.bash_profile; then
    echo "$line" >> ~/.bash_profile
  fi
}


brew_cask_install() {
  local cask="$1"

  if ! brew cask list | grep --quiet --line-regexp "$cask"; then
    echo "Installing cask $cask"
    brew cask install "$cask"
  else
    echo "Cask $cask already installed. Skipping..."
  fi
}


brew_install() {
  local formula="$1"

  if ! brew list | grep --quiet --line-regexp "$formula"; then
    echo "Installing formula $formula"
    brew install "$formula"
  else
    echo "Formula $formula already installed. Skipping..."
  fi
}


generate_ssh_keys() {
  DIRECTORY=~/.ssh
  KEY_PATH=~/.ssh/id_rsa

  if [ ! -d "$DIRECTORY" ]; then
    mkdir $DIRECTORY
    chmod -R 0700 $DIRECTORY
  fi

  if [ -f "$KEY_PATH" ]; then
    echo "SSH keys already exists, skipping..."
  else
    ssh-keygen -t rsa -f "$KEY_PATH" -N ''
  fi
}


install_command_line_tools() {
  if xcode-select -p > /dev/null; then
    echo "Command Line Tools already installed. Skipping..."
  else
    # From https://github.com/rtrouton/rtrouton_scripts/blob/master/rtrouton_scripts/install_xcode_command_line_tools/install_xcode_command_line_tools.sh
    local tmp_file="/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
    touch "$tmp_file"

    # Find the last listed update in the Software Update feed with "Command Line Tools" in the name
    local cmd_line_tools=$(softwareupdate -l | awk '/\*\ Command Line Tools/ { $1=$1;print }' | tail -1 | sed 's/^[[ \t]]*//;s/[[ \t]]*$//;s/*//' | cut -c 2-)
    echo $cmd_line_tools
  
    #Install the command line tools
    softwareupdate -i "$cmd_line_tools" -v
  
    # Remove the temp file
    if [[ -f "$tmp_file" ]]; then
      rm "$tmp_file"
    fi
  
    # after installing, changing developer dir
    sudo xcode-select --switch /Library/Developer/CommandLineTool

    # agreeing to the license
    sudo xcodebuild -license
    
  fi # end installing commnad line tools
}


install_fonts() {
  brew tap caskroom/fonts

  brew_cask_install font-hack
  brew_cask_install font-open-sans
}


install_homebrew() {
  if ! command -v brew > /dev/null; then
    echo "Installing Homebrew"

    curl --silent \
         --fail \
         --show-error \
         --location \
         https://raw.githubusercontent.com/Homebrew/install/master/install | ruby

    source ~/.bash_profile

    brew doctor
  else
    echo "Homebrew already installed. Skipping..."
  fi
}

install_postgres() {
  
  if ! brew list | grep --quiet --line-regexp "postgresql"; then

    brew_install postgresql

    local pgdatadir=/usr/local/var/postgres

    # removing brew initialized cluster
    rm -rf $pgdatadir

    # creating a new one, with custom encoding and locale
    initdb --encoding=UTF-8 --locale=pt_BR.UTF-8 --lc-messages=en_US.UTF-8 --username=postgres $pgdatadir

    # creating 'caiena' role
    pg_ctl -D $pgdatadir start
    # waiting for server to start
    sleep 5

    psql --username=postgres --command="CREATE ROLE caiena SUPERUSER CREATEDB CREATEROLE LOGIN"

    pg_ctl -D $pgdatadir stop

  fi
}

install_rvm() {
  if [ ! -d $HOME/.rvm ]; then
    gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
    curl -sSL https://get.rvm.io | bash -s stable --autolibs=homebrew

    source ~/.rvm/scripts/rvm

    rvm install ruby --latest

    # skipping doc when installing gems
    touch ~/.gemrc
  
    local nodoc="gem: --no-ri --no-rdoc --no-document"
    if ! grep --quiet "$nodoc" ~/.gemrc; then
      echo "$nodoc" >> ~/.gemrc
    fi

  else
    echo "rvm already installed. Skipping..."
  fi
}


install_terminal_solarized() {
  echo "Installing Solarized Dark color theme for Terminal.app"
  echo "  - It will open a new terminal window with the theme."
  echo "  - Feel free to close it."

  curl -sSL https://raw.githubusercontent.com/altercation/solarized/master/osx-terminal.app-colors-solarized/Solarized%20Dark%20ansi.terminal > /tmp/"Solarized Dark.terminal"
  open /tmp/"Solarized Dark.terminal"
}


# we expect a .bash_profile to exist
touch ~/.bash_profile

install_command_line_tools
install_homebrew

brew_install git
brew_install sqlite
brew_install imagemagick
brew_install bash-completion

# extra config needed for bash-completion to work properly
if ! grep --quiet "etc/bash_completion" ~/.bash_profile; then

  cat <<-EOF >> ~/.bash_profile

# enabling bash-completion
if [ -f $(brew --prefix)/etc/bash_completion ]; then
  source $(brew --prefix)/etc/bash_completion
fi

EOF

fi


brew_install gpg
install_postgres

brew_install phantomjs

brew_install caskroom/cask/brew-cask

brew tap caskroom/versions
brew_cask_install firefox
brew_cask_install google-chrome
brew_cask_install slack
brew_cask_install sublime-text3

install_rvm
generate_ssh_keys


install_fonts


# adding solarized to terminal
install_terminal_solarized


# disable accentuation on key holding
defaults write -g ApplePressAndHoldEnabled -bool false

# Fast keyboard repeat rate
defaults write NSGlobalDomain KeyRepeat -int 2

# Shorter delay until key repeat
# defaults write NSGlobalDomain InitialKeyRepeat -int 20

# Enable inspect element in web views
# defaults write NSGlobalDomain WebKitDeveloperExtras -bool true

# Allow using tabs to cycle between prompts buttons
defaults write NSGlobalDomain AppleKeyboardUIMode -int 3 

# Always show file extensions
defaults write NSGlobalDomain AppleShowAllExtensions -bool true

# Don't create DS_Store when connecting to network volumes
defaults write com.apple.desktopservices DSDontWriteNetworkStores -bool true

# Don't always ask for using connected external drive with Timemachine
defaults write com.apple.TimeMachine DoNotOfferNewDisksForBackup -bool true

# Turn off keyboard illumination when it is not touched for five minutes
# defaults write com.apple.BezelServices kDimTime -int 300

# Disabling smart quotes substitution
defaults write NSGlobalDomain NSAutomaticQuoteSubstitutionEnabled -bool false
defaults write com.apple.TextEdit SmartQuotes -bool false

# Disabling smart dashes substitution
defaults write NSGlobalDomain NSAutomaticDashSubstitutionEnabled -bool false
defaults write com.apple.TextEdit SmartDashes -bool false

# Disabling autocorrect
defaults write -g NSAutomaticSpellingCorrectionEnabled -bool false


# Disabling Gatekeeper (will prompt for password)
sudo spctl --master-disable


echo "Setup complete. Enjoy! :)"