How to install Rails on macOS Catalina. Please refer to it when setting up in a local environment such as Rails tutorial.
xcode-select --install/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"brew update
brew install rbenv
echo 'eval "$(rbenv init -)"' >> ~/.zshrc
source ~/.zshrcrbenv install 2.7.0rbenv global 2.7.0brew install yarngem install rails -v 5.1.6Rails Girls Installation Recipe
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