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From: jsdy@hadron.uucp (Joseph S. D. Yao)
Newsgroups: comp.std.unix
Subject: Re: tar or cpio?  Tar, of course!
Message-ID: <8024@ut-sally.UUCP>
Date: Tue, 12-May-87 09:34:03 EDT
Article-I.D.: ut-sally.8024
Posted: Tue May 12 09:34:03 1987
Date-Received: Fri, 15-May-87 01:07:38 EDT
References: <8018@ut-sally.UUCP>
Sender: std-unix@ut-sally.UUCP
Reply-To: jsdy@hadron.uucp (Joseph S. D. Yao)
Organization: Hadron, Inc., Fairfax, VA
Lines: 50
Approved: jsq@sally.utexas.edu (Moderator, John Quarterman)
Summary: Some help, I hope

Reply-To: jsdy@hadron.uucp (Joseph S. D. Yao)

In article <8018@ut-sally.UUCP> rbj@icst-cmr.arpa writes:
>Depends on what you mean. I have had troubles reading the original
>TPC V6 & V7 distribution tapes under 4.2 BSD. Perhaps the format has
>changed since then. Anyone have a tar that will read these tapes?

At this early hour, I can't think what "TPC" means.  When someone
tells me, I shall probably kick myself.  On the other hand, the
first UUG V6 & V7 distribution tapes were in tp or stp format.
(Remember those?)  When we first started switching to tar, we had
some problems with a tar for V6 and PWB System 1.X.  If I remember
correctly, the first few read OK and wrote trash.  They were based
on (the new) V7 tar.

Oh.  The Phone Company.  OK.  Cutesy I am  n o t  at this hour of
the morning.  (One dissenting vote heard from.)  My comment stands:
the V6 and PWB tapes, at least; and prob'ly V7 as well, were not
based on tar.

[ Readers are not required to read articles early in the morning just
because I often post them then.  :-)

The tar format in POSIX is derived from Version 7, as are most of the
tar programs in use today.  -mod ]

>I would also like to see an option not to cross mount points, that is
>stay on the same partition. This should be added to several major utilities.

Easy enough:
	[%$] su
	Password:
	# mount
	/ on /dev/disk-0
	/prime on /dev/disk-1
	/prime/secundus on /dev/disk-2
	# unmount /dev/disk-2
	# cd /prime
	# tar xv

Other than that, this is awfully hard to do unless you are willing
to break modularity by sticking info about the FS into programs
which have no need to know about it whatsoever.

	Joe Yao		jsdy@hadron.COM (not yet domainised)
	hadron!jsdy@{seismo.CSS.GOV,dtix.ARPA,decuac.DEC.COM}
{arinc,att,avatar,cos,decuac,dtix,ecogong,kcwc}!hadron!jsdy
     {netex,netxcom,rlgvax,seismo,smsdpg,sundc}!hadron!jsdy

Volume-Number: Volume 11, Number 23