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From: tempest@walleye.uucp (Kenneth K.F. Lui)
Newsgroups: comp.sys.next
Subject: Re: FAQ -- Question #1(Next public domain software).
Message-ID: <1991Jan16.072021.13782@ecst.csuchico.edu>
Date: 16 Jan 91 07:20:21 GMT
References: <P5NPV1w163w@exactus.UUCP> <Fe7h6#94@cs.psu.edu> <1127@toaster.SFSU.EDU> <1991Jan16.034038.14804@nntp-server.caltech.edu>
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Reply-To: tempest@ecst.csuchico.edu (Kenneth K.F. Lui)
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In article <1991Jan16.034038.14804@nntp-server.caltech.edu> madler@pooh.caltech.edu (Mark Adler) writes:
>The "o" has no effect with "x" (it forces an old tar format when *making*
>tar files). The "p" option uses the modes in the tar file, which I don't
>think is a good idea unless you're going to always look at the modes
>afterwards.

Here's a part of the tar man page:
     o         On output, tar normally places information speci-
[                 ^^^^^^ <- note the mode, not making tar files.]
               fying owner and modes of directories in the
               archive.  Former versions of tar, when encounter-
               ing this information will give error message of
               the form
                    "<name>/: cannot create".
               This modifier will suppress the directory informa-
              tion.

     p         This modifier says to restore files to their ori-
               ginal modes, ignoring the present umask(2).
               Setuid and sticky information will also be
               restored to the super-user.

I find the p option very useful as it keeps the file dates upon
extraction.  Too bad ftp doesn't have an equivalent option for
*gets and *puts, as I can never tell if two files are the same
on different sites when using their dates.


Ken
______________________________________________________________________________
tempest@ecst.csuchico.edu, tempest@walleye.ecst.csuchico.edu,|Kenneth K.F. Lui|
tempest@sutro.sfsu.edu, tempest@wet.UUCP                     |________________|