On Fri, Jul 10, 2009 at 11:24:19AM +0300, Dotan Cohen wrote: > KDE gives users three options to compress folders: tar, zip, and rar. > What are the advantages or disadvantages of each? How do I know which > one to use? http://www.debian.org/doc/manuals/debian-reference/ch10.en.html#_archive_and_compression_tools tar (w/ gzip or bzip2) --> unix free zip --> dos/windows free rar --> windows non-free Please read technicals wikipedia etc. Osamu