Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!mit-eddie!uw-beaver!sumax!thebes!camco!bill
From: bill@camco.Celestial.COM (Bill Campbell)
Newsgroups: comp.unix.questions
Subject: Re: Backups using compress
Message-ID: <275@camco.Celestial.COM>
Date: 30 Nov 90 08:42:07 GMT
References: <25106@adm.brl.mil> <1990Nov28.005522.7258@mrspoc.Transact.COM>
Organization: Celestial Software, Mercer Island, WA
Lines: 35

In <1990Nov28.005522.7258@mrspoc.Transact.COM> itkin@mrspoc.Transact.COM (Steven M. List) writes:

:dpence@redstone-emh2.army.mil ( Dwayne Pence) writes:

:>Does anyone know of a way to compress files before sending them through 
:>cpio or tar to tape without actually creating a ".Z" file on disk.  I am 
:>trying to create backup tapes which are compressed versions of our files 
:>on disk.  Any help would be appreciated.

:CTAR from Microlite (Pennsylvania, I think - I'm home and don't have the
:info here) does compression as it writes the tape, and does it in memory.
:It's a pretty slick product, and I recommend it highly.
:-- 
: +----------------------------------------------------------------------------+
: :                Steven List @ Transact Software, Inc. :^>~                  :
: :           Chairman, Unify User Group of Northern California                :
: :     {apple,coherent,limbo,mips,pyramid,ubvax}!itkin@guinan.Transact.COM    :

Microlite's e-mail address is uunet!mlite!tom (Tom Podnar).  I
don't believe CTAR compresses in memory, but uses the standard
compress program.  If you are using a seekable device for your
backup medium (floppy, Bernoulli Box...) it compresses directly
on the backup media.  If you are using tape, it makes a
compressed backup in a temporary directory, then copies that file
to the tape.

CTAR includes routines to properly manage backups, both full and
incremental, and has a good menu system for those who can't type.

Bill.
--
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INTERNET:  bill@Celestial.COM   Bill Campbell; Celestial Software
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