module FileUtils

def ruby(*args, **options, &block)


ruby %{-pe '$_.upcase!' Example:

Run a Ruby interpreter with the given arguments. 
def ruby(*args, **options, &block)
  if args.length > 1
    sh(RUBY, *args, **options, &block)
  else
    sh("#{RUBY} #{args.first}", **options, &block)
  end
end