[GRASSLIST:663] Re: off topic: backing up huge mapsets

[Benjamin Ducke]

tar --help:

  Device selection and switching:

   -f, --file=ARCHIVE         use archive file or device ARCHIVE
       --force-local          archive file is local even if has a colon
   -F, --info-script=NAME, --new-volume-script=NAME
                              run script at end of each tape (implies -M)
   -L, --tape-length=NUMBER   change tape after writing NUMBER x 1024 bytes
   -M, --multi-volume         create/list/extract multi-volume archive
       --rmt-command=COMMAND  use given rmt COMMAND instead of rmt
       --rsh-command=COMMAND  use remote COMMAND instead of rsh
       --volno-file=FILE      use/update the volume number in FILE

... so options -L and -M should be what you are looking for?

Benjamin


Jaime Carrera wrote:
> Hi all,
> 
> I know this is off topic but probably some of you had experienced this 
> problem as well. I have a very large mapset (19 GB) which is not 
> compressed by using bz2 (the final tar.bz2 file was 17.2 GB). I have a 
> backup of this mapset on an USB hard disk but I would like to create 
> another copy in a couple of double layer DVDs (I don't want to take any 
> chances with the data that I have). Does someone know how to create 
> three smaller files which I can later burn on separate DVDs?
> 
> thanks,
> 
> Jaime
> 
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-- 
Benjamin Ducke, M.A.
Archäoinformatik
(Archaeo-Information Science)
Institut für Ur- und Frühgeschichte
(Institute of Archaeology)
Christian-Albrechts-Universität zu Kiel
Johanna-Mestorf-Straße 2-6
D 24098 Kiel
Germany

Tel.: ++49 (0)431 880-3378 / -3379
Fax : ++49 (0)431 880-7300
www.uni-kiel.de/ufg