russischer Abakus Informatik-Vollmer
    

split-tar

I've written a small shell script splitting large TAR archives into smaller ones. Each of the smaller files is a proper TAR archive.

Download

Download the actual version (1.11 of 2006/06/02) of the script.

License

All my tools are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

The programs are free software; you can redistribute them and/or modify them under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version.

You should have received a copy of the GNU General Public License along with those programs; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

If you find this software useful, please send me a postcard from the place where you are living:
Dr. Jürgen Vollmer
Viktoriastraße 15
D-76133 Karlsruhe, Germany

Usage

usage: split-tar [options] tarfile.<suffix> (filename|directory)...

  Splits a large tar archive into a set of smaller ones.
  Creates a set of tar archives direct from the files and directories.

  <suffix> is one of tar, tar.gz, tgz, or tar.bz2
  Files are written to tarfile-???.<suffix> into the current working directory,
  where ??? are three digits.
  Note: since a TAR file contains tar-specific administration information
        the resulting tar files may be larger that the specified size.
        For computation only the file size of the sources are used.

  Note: split-tar relies on the GNU version of "tar", "find" and "bash".
  Note: split-tar is not able to read the filenames from stdin.
        Use -T instead.

Options:
  -c       : Create the tar archives from [filename|directory...].
  -C opts  : Pass opts to tar, when creating the tarfile with -c
	     the compression options -z (gzip) or -j (bizp2) are
             added by default, if the <suffix> indicates it.
  -e rate  : To compute the set of files to be put into a compressed
             tarfile, one has to estimate compressed size of each
	     uncompressed source file. To do this a compression program
             indicated by the  tarfile.<suffix> is called (e.g. gzip).
             This may be quite time consiming.

             This overhead my be avoided by giving an "compression rate"
             using the -e option. The real file-size of an an uncompressed
             file is divided by that <rate>. This may result in
             too large or too small result tarfiles. So one has to to some
             trial and error to get the <rate> value right.

             The <rate> is positive number.
  -f prog  : Use prog as "find" program, e.g.
               -f /usr/local/bin/gfind
  -N date  : Only store files newer than <date>.
             Typical format: YYYY-MM-DD or 'YYYY-MM-DD HH:MM:SS' or
             if <date> begins with `/' or `.', it is taken to be the name
             of a file whose last-modified time specifies the date.
	     -N passes its argument as tar option `--newer=<date>'
             (this may be changed in the source of this script, see
              variable TAR_NEWER).
	     -N is valid only if -c is given.
  -h       : Help
  -s sizeK : Maximum size of one tar file in Kilo bytes, default 1024
  -s sizeM : Size given in Mega Byte
  -s sizeG : Size given in Giga Byte
  -S       : Split the existing tar archive tarfile.<suffix>
             no [filename|directory...] may be given
             that's the default
  -t prog  : Use prog as "tar" program, e.g.
               -t /usr/local/bin/gtar
  -T file  : Read names to create the archive from <file>
  -v       : Verbose (verbose tar messages)
  -V       : Version.

Example:
  Splitting an already existing archive:
    If foo.tar.gz has a size of 3 M bytes, the command
       split-tar -s 1M foo.tar.gz
    will create the three tar.gz archives:
       foo-000.tar.gz
       foo-001.tar.gz
       foo-002.tar.gz
    which may be unpacked as usual:
       tar -xzvf foo-000.tar.gz
       tar -xzvf foo-001.tar.gz
       tar -xzvf foo-002.tar.gz
    and the the result would be the same as if one unpacks the initial archive
       tar -xzvf foo.tar.gz

  Creating the archives directly from the sources:
       split-tar -e 5 -s 10M -c foo.tar.gz /home/foo
  will create tar archives:
       foo-000.tar.gz, ....  foo-<n>.tar.gz
  containing foo's home directory. A compression rate of 5 is assumed
  for all not already compressed files.

Requirements:
  BASH, GNU-tar, and GNU-find.

Version:
  1.11 of 2006/06/02

Author:
  Dr. Jürgen Vollmer <juergen.vollmer@informatik-vollmer.de>
  If you find this software useful, I would be glad to receive a postcard
  from you, showing the place where you're living.

Homepage:
  http://www.informatik-vollmer.de/software/split-tar.html

Copyright:
  (C) 2003 Dr. Jürgen Vollmer, Viktoriastrasse 15, D-76133 Karlsruhe, Germany

License:
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Changelog

Revision 1.30  2010/01/13 17:57:52  vollmer
typoo

Revision 1.29  2006/07/10 07:17:28  vollmer
typoo

Revision 1.28  2006/06/02 09:26:07  vollmer
typoo

Revision 1.27  2006/04/24 14:11:46  vollmer
typoo

Revision 1.26  2006/02/23 20:01:46  vollmer
Now all directories get the correct time stamp.
Sorting works as expected, even if non- 7-bit-ASCII letters are used
by using LC_ALL=C.
Thanks to one who wants to be unnamed for sending me the bug-fixes.

Revision 1.25  2005/04/27 13:48:34  vollmer
Add all intermediate directories of a path explicitly in order to get
file/directory ownership correctly.
Thanks to Tom Battisto <tbattist-AT-mailaka.net> for the bug report.

Revision 1.24  2005/04/26 07:56:49  vollmer
Directory persmissions are set now correctly when unpacking the archives.
Thanks to Tom Battisto <tbattist-AT-mailaka.net> for the bug report.

Revision 1.23  2005/04/08 20:52:32  vollmer
Added option -T, thanks to Juergen Kainz <jkainz-AT-transflow.com>

Revision 1.21  2005/04/08 20:14:22  vollmer
added option -e

Revision 1.20  2004/07/23 21:30:15  vollmer
- added -f and -t options to specify a FIND and TAR program.

Revision 1.18  2003/11/06 16:24:13  vollmer
- options passed by -C to tar will be passed now to the do_tar routine
- \ as part of file names are allowed now
Thanks to A. R.

Revision 1.17  2003/11/03 16:42:10  vollmer
- Added option -N
- The created tar files are stored now in the given directory and not
in the current one.
Thanks to Martin Walter <martin.walter-AT-erol.at>, who found that bug and
asked for -N

Revision 1.16  2003/10/31 13:01:51  vollmer
Creating a splitted tar file from directory works now for absolute
path names of the directory

Revision 1.15  2003/09/18 17:10:40  vollmer
Filenames containing blanks are processed correctly if given on the
command line.
Thanks to Dr. Jim McCaa <jmccaa-AT-ucar.edu>, who gave me the fix.

Revision 1.14  2003/08/18 07:28:16  vollmer
The number followed -s must be followed now by k m or g
(in order to make `expr' more portable)

Revision 1.13  2003/08/12 07:56:38  vollmer
added an Example

Revision 1.12  2003/08/12 07:22:27  vollmer
fixed a bug found by Willem Penninckx <willem.penninckx-AT-belgacom.net>:
filenames may contain now blanks and * and other shell emta charcters.

Revision 1.11  2003/07/29 14:08:10  vollmer
added the aibility to create the tar archive directly from the sources
(option -c)

Revision 1.10  2003/07/29 13:01:50  vollmer
-s accepts size specifier k,K,m,M,g or G

Revision 1.9  2003/07/29 12:38:17  vollmer
improved computing expected size computation

Revision 1.8  2003/07/21 07:55:32  vollmer
added --no-name option to the gzip COMPRESS_CMD

Revision 1.7  2003/07/15 08:27:04  vollmer
- added bzip2, thanks to Martin Deinhofer <martin.deinhofer-AT-gesig.at>
- added length of file names when computing the size

Revision 1.0  2003/07/02 14:57:17 vollmer
Initial revision
#############################################################################
© Copyright 2005 Dr. Jürgen Vollmer (www.informatik-vollmer.de)
This page was updated on March 09, 2012