brew.sh

#!/usr/bin/env bash

# Install Homebrew.
if ! command -v brew &> /dev/null; then
    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
fi

# Install command-line tools using Homebrew.

# Make sure we’re using the latest Homebrew.
brew update

# Upgrade any already-installed formulae.
brew upgrade

# Save Homebrew’s installed location.
BREW_PREFIX=$(brew --prefix)

# Install GNU core utilities (those that come with macOS are outdated).
# Don’t forget to add `$(brew --prefix coreutils)/libexec/gnubin` to `$PATH`.
brew install coreutils

# Install some other useful utilities like `sponge`.
brew install moreutils
# Install GNU `find`, `locate`, `updatedb`, and `xargs`, `g`-prefixed.
brew install findutils
# Install GNU `sed`, overwriting the built-in `sed`.
brew install gnu-sed --with-default-names
# Install Bash 4.
brew install bash
brew install bash-completion2

# Switch to using brew-installed bash as default shell
if ! fgrep -q "${BREW_PREFIX}/bin/bash" /etc/shells; then
  echo "${BREW_PREFIX}/bin/bash" | sudo tee -a /etc/shells
  chsh -s "${BREW_PREFIX}/bin/bash"
fi

# Install from Brewfile
[ -f Brewfile ] && brew bundle

brew cleanup