ruby-buildでバージョン指定してコンパイルしてtarで固める。（puppetで撒く用の処理）

gistfile1.rb

#!/usr/bin/env ruby
require 'colorize'

def exec_cmd(str)
  puts "[CMD] #{str}".colorize(:green)

  result = ''
  result = system(str)
  puts "[OUTPUT] #{result}".colorize(:blue)
end

# ruby compile
Dir.chdir("/usr/local/rbenv/plugins/ruby-build")
exec_cmd 'pwd'
exec_cmd 'git pull origin master'

rbenv_install = '/usr/local/rbenv/plugins/ruby-build/bin/rbenv-install'
exec_cmd rbenv_install + ' -l'

p 'which ruby version?'
while line = STDIN.gets
  line.strip!

  if line == 'h'
    exec_cmd rbenv_install
  else
    version = line
    puts "input: #{version}"
    break
  end
end

raise "no version..." if version == ''

exec_cmd rbenv_install + ' ' + version
exec_cmd "rbenv local  #{version}"
exec_cmd "rbenv global #{version}"
exec_cmd 'gem install bundler'
Dir.chdir("/usr/local/rbenv/versions")
exec_cmd "tar czvf rbenv_#{version}.tgz #{version}/"

exec_cmd("mkdir /etc/#{version}")
exec_cmd("mv rbenv_#{version}.tgz /etc/#{version}/")