[carlos@chernan begins]$ unzip tutorial01.rar
Archive:  tutorial01.rar
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of tutorial01.rar or
        tutorial.rar.zip, and cannot find king_diamond                                            
        tutorial.rar.ZIP, period.