> One more help please.is any software or utility in windows to open pax
> file or extract

   An HP-UX forum may not be the best place to ask questions about
software for Windows.  (_Which_ Windows?)  GNU "tar" is probably
available for Windows (as it is for HP-UX).

   What, exactly, are you trying to do?  If you're trying to move data
from an HP-UX system to a Windows system, then Zip may be a better
choice than "tar" (or "pax").  (Info-ZIP Zip and UnZip are available for
HP-UX and Windows, and many other compatible programs are available for
Windows.)

      http://www.info-zip.org/

> I run that commands.But how can untar or unpax that particular file or
> folder on PAX utility.

   What, exactly, are you trying to do?  What is "that particular file"?

> [...] and please one example [...]

   Same to you.

> Is pax also compress the size or not.

   Did you see it compress anything?

      man pax

Generally, programs like "tar" (or "pax") rely on external compression
programs (like gzip or bzip2).  A modern GNU "tar" program can run the
compression program itself.

      http://www.gnu.org/s/tar/manual/tar.html#SEC131

Older or non-GNU "tar" programs may depend on the user to run the
compression program.  For example:

      tar cf - things_to_archive | gzip -c > things.tar.gz

Zip is an integrated archiving and compression program.  It has built-in
compression capability.

> Please help me again

   That might be easier if you explained what you really want to do,
instead of asking how to use "tar" (or "pax").

> Sorry sorry but i am new in hp ux...

      man man
      man pax
      man tar