MACインストールbrew共通メソッド(以前)

/usr/bin/ruby -e “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)”
その結果、エラーメッセージを実行します.githubusercontent.com port 443: Connection refused
ネット上で長い間探して、raw.githubusercontent.comは閉じられて開かないので、ホストを構成する方法でページのソースコードを引き出します.
ソースコードは次のとおりです.

#!/usr/bin/ruby
# This script installs to /usr/local only. To install elsewhere (which is
# unsupported) you can untar https://github.com/Homebrew/brew/tarball/master
# anywhere you like.
HOMEBREW_PREFIX = "/usr/local".freeze
HOMEBREW_REPOSITORY = "/usr/local/Homebrew".freeze
HOMEBREW_CACHE = "#{ENV["HOME"]}/Library/Caches/Homebrew".freeze
BREW_REPO = "https://github.com/Homebrew/brew".freeze

# TODO: bump version when new macOS is released
MACOS_LATEST_SUPPORTED = "10.15".freeze
# TODO: bump version when new macOS is released
MACOS_OLDEST_SUPPORTED = "10.13".freeze

# no analytics during installation
ENV["HOMEBREW_NO_ANALYTICS_THIS_RUN"] = "1"
ENV["HOMEBREW_NO_ANALYTICS_MESSAGE_OUTPUT"] = "1"

# get nicer global variables
require "English"

module Tty
  module_function

  def blue
    bold 34
  end

  def red
    bold 31
  end

  def reset
    escape 0
  end

  def bold(code = 39)
    escape "1;#{code}"
  end

  def underline
    escape "4;39"
  end

  def escape(code)
    "\033[#{code}m" if STDOUT.tty?
  end
end

class Array
  def shell_s
    cp = dup
    first = cp.shift
    cp.map { |arg| arg.gsub " ", "\\ " }.unshift(first).join(" ")
  end
end

def ohai(*args)
  puts "#{Tty.blue}==>#{Tty.bold} #{args.shell_s}#{Tty.reset}"
end

def warn(warning)
  puts "#{Tty.red}Warning#{Tty.reset}: #{warning.chomp}"
end

def system(*args)
  abort "Failed during: #{args.shell_s}" unless Kernel.system(*args)
end

def sudo(*args)
  args.unshift("-A") unless ENV["SUDO_ASKPASS"].nil?
  ohai "/usr/bin/sudo", *args
  system "/usr/bin/sudo", *args
end

def getc
  system "/bin/stty raw -echo"
  if STDIN.respond_to?(:getbyte)
    STDIN.getbyte
  else
    STDIN.getc
  end
ensure
  system "/bin/stty -raw echo"
end

def wait_for_user
  puts
  puts "Press RETURN to continue or any other key to abort"
  c = getc
  # we test for \r and 
 because some stuff does \r instead
  abort unless (c == 13) || (c == 10)
end

class Version
  include Comparable
  attr_reader :parts

  def initialize(str)
    @parts = str.split(".").map(&:to_i)
  end

  def <=>(other)
    parts <=> self.class.new(other).parts
  end

  def to_s
    parts.join(".")
  end
end

def macos_version
  @macos_version ||= Version.new(`/usr/bin/sw_vers -productVersion`.chomp[/10\.\d+/])
end

def should_install_command_line_tools?
  if macos_version > "10.13"
    !File.exist?("/Library/Developer/CommandLineTools/usr/bin/git")
  else
    !File.exist?("/Library/Developer/CommandLineTools/usr/bin/git") ||
      !File.exist?("/usr/include/iconv.h")
  end
end

def user_only_chmod?(path)
  return false unless File.directory?(path)

  mode = File.stat(path).mode & 0777
  # u = (mode >> 6) & 07
  # g = (mode >> 3) & 07
  # o = (mode >> 0) & 07
  mode != 0755
end

def chmod?(path)
  File.exist?(path) && !(File.readable?(path) && File.writable?(path) && File.executable?(path))
end

def chown?(path)
  !File.owned?(path)
end

def chgrp?(path)
  !File.grpowned?(path)
end

# USER isn't always set so provide a fall back for the installer and subprocesses.
ENV["USER"] ||= `id -un`.chomp

# Invalidate sudo timestamp before exiting (if it wasn't active before).
Kernel.system "/usr/bin/sudo -n -v 2>/dev/null"
at_exit { Kernel.system "/usr/bin/sudo", "-k" } unless $CHILD_STATUS.success?

# The block form of Dir.chdir fails later if Dir.CWD doesn't exist which I
# guess is fair enough. Also sudo prints a warning message for no good reason
Dir.chdir "/usr"

####################################################################### script
if RUBY_PLATFORM.to_s.downcase.include?("linux")
  abort < MACOS_LATEST_SUPPORTED || macos_version < MACOS_OLDEST_SUPPORTED
  who = "We"
  if macos_version > MACOS_LATEST_SUPPORTED
    what = "pre-release version"
  elsif macos_version < MACOS_OLDEST_SUPPORTED
    who << " (and Apple)"
    what = "old version"
  else
    return
  end
  ohai "You are using macOS #{macos_version.parts.join(".")}."
  ohai "#{who} do not provide support for this #{what}."

  puts <= "10.13"
  ohai "Searching online for the Command Line Tools"
  # This temporary file prompts the 'softwareupdate' utility to list the Command Line Tools
  clt_placeholder = "/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
  sudo "/usr/bin/touch", clt_placeholder

  clt_label_command = "/usr/sbin/softwareupdate -l | " \
                      "grep -B 1 -E 'Command Line Tools' | " \
                      "awk -F'*' '/^ *\\*/ {print $2}' | " \
                      "sed -e 's/^ *Label: //' -e 's/^ *//' | " \
                      "sort -V | " \
                      "tail -n1"
  clt_label = `#{clt_label_command}`.chomp

  unless clt_label.empty?
    ohai "Installing #{clt_label}"
    sudo "/usr/sbin/softwareupdate", "-i", clt_label
    sudo "/bin/rm", "-f", clt_placeholder
    sudo "/usr/bin/xcode-select", "--switch", "/Library/Developer/CommandLineTools"
  end
end

# Headless install may have failed, so fallback to original 'xcode-select' method
if should_install_command_line_tools? && STDIN.tty?
  ohai "Installing the Command Line Tools (expect a GUI popup):"
  sudo "/usr/bin/xcode-select", "--install"
  puts "Press any key when the installation has completed."
  getc
  sudo "/usr/bin/xcode-select", "--switch", "/Library/Developer/CommandLineTools"
end

abort <&1` =~ /license/ && !$CHILD_STATUS.success?
You have not agreed to the Xcode license.
Before running the installer again please agree to the license by opening
Xcode.app or running:
    sudo xcodebuild -license
EOABORT

ohai "Downloading and installing Homebrew..."
Dir.chdir HOMEBREW_REPOSITORY do
  # we do it in four steps to avoid merge errors when reinstalling
  system "git", "init", "-q"

  # "git remote add" will fail if the remote is defined in the global config
  system "git", "config", "remote.origin.url", BREW_REPO
  system "git", "config", "remote.origin.fetch", "+refs/heads/*:refs/remotes/origin/*"

  # ensure we don't munge line endings on checkout
  system "git", "config", "core.autocrlf", "false"

  system "git", "fetch", "origin", "master:refs/remotes/origin/master",
         "--tags", "--force"

  system "git", "reset", "--hard", "origin/master"

  system "ln", "-sf", "#{HOMEBREW_REPOSITORY}/bin/brew", "#{HOMEBREW_PREFIX}/bin/brew"

  system "#{HOMEBREW_PREFIX}/bin/brew", "update", "--force"
end

warn "#{HOMEBREW_PREFIX}/bin is not in your PATH." unless ENV["PATH"].split(":").include? "#{HOMEBREW_PREFIX}/bin"

ohai "Installation successful!"
puts

# Use the shell's audible bell.
print "\a"

# Use an extra newline and bold to avoid this being missed.
ohai "Homebrew has enabled anonymous aggregate formulae and cask analytics."
puts <

ローカルで新規作成されたテキストに貼り付け、名前をbrew_と変更します.install.rb
そして端末に入力

ruby brew_install.rb

このとき対応ファイルを選択してインストールするとbrewのダウンロード&インストールが完了します