--- FileUtils.rm( list, *options )
  Options: force noop verbose

  list[0]list[1] Ĥõޤ:force ץ
  åȤ줿Ϻ椹٤Ƥ StandardError ̵뤷ޤ

    FileUtils.rm %w( junk.txt dust.txt )
    FileUtils.rm Dir['*.so']
    FileUtils.rm 'NotExistFile', :force    # never raises exception

