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Going from Zero to Rails on OS X
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README.md

  1. Open a Terminal window

  2. Install Xcode command line tools:

    xcode-select --install

    (Follow pop-up prompts to install command-line tools)

  3. Install the homebrew package manager:

    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

    You may be prompted for your admin password. It's fine. The installer needs to set the right permissions on /usr/local.

  4. Install the asdf version manager:

    brew install asdf

  5. Configure your shell to load asdf:

    echo 'export ASDF_DIR=$(brew --prefix asdf)' >> ~/.bash_profile
echo '. $ASDF_DIR/asdf.sh' >> ~/.bash_profile

  6. Close your Terminal window and open a new one.

  7. Install ruby:

    asdf plugin-add ruby
asdf install ruby 2.5.5
asdf global ruby 2.5.5
asdf reshim ruby

  8. Install rails:

    gem install --no-doc rails -v 5.2.3
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