perhaps it was mentioned already, but "rar" (from FreshRPMs) compresses
AND splits files into multiple parts.
I've used it for moving large files (> 4 GB) across fat32 partitions.
An additional benefit is that the archiver is truly cross-platform, so
moving files between Windows and 'nix is simplified.
Jeff Krebs
* Dave Ihnat (dihnat@xxxxxxxxxx) wrote:
> On Thu, Nov 29, 2007 at 10:35:32AM +1100, Lux Zhang wrote:
> > what are tools to split a large file (etc 700mb a.avi) into small
> > pieces and then the merger to merge them?
>
> People have suggested 'split' and 'cat'. These are at best marginal, at
> worst simply won't work for binary files.
>
> Look for a script called 'bsplit'. If you can't find a distributed version,
> something like the attached will work.
>
> Cheers,
> --
> Dave Ihnat
> President, DMINET Consulting, Inc.
> dihnat@xxxxxxxxxx
> #
> # bsplit [n] name
> #
> # Breaks a file into N-block parts, where a block is 512 bytes
> #
> # Author: Dave Ihnat. Released as a work in the Public Domain.
>
> BCOUNT=0
> FCOUNT=0
> BSKIP=0
>
> if [ $# -eq 2 ]
> then
> BCOUNT=$1;
> shift;
> else
> BCOUNT=100;
> fi;
>
> OUTFILE=$1;
> PREFIX=00
>
> while [ TRUE ]
> do
> echo "$OUTFILE.${PREFIX}${FCOUNT}"
>
> # dd of=$OUTFILE.${PREFIX}${FCOUNT} skip=$BSKIP count=$BCOUNT
> dd of=$OUTFILE.${PREFIX}${FCOUNT} count=$BCOUNT
>
> if [ $? -ne 0 ]
> then
> break;
> fi;
>
> if [ ! -s $OUTFILE.${PREFIX}${FCOUNT} ]
> then
> rm $OUTFILE.${PREFIX}${FCOUNT}
> break;
> fi;
>
> FCOUNT=`expr $FCOUNT + 1`
> if [ "$FCOUNT" -gt 99 ]
> then
> PREFIX=""
> elif [ "$FCOUNT" -gt 9 ]
> then
> PREFIX="0"
> fi;
>
> BSKIP=`expr $BSKIP + $BCOUNT`
> done
>
> exit 0
> --
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> fedora-list@xxxxxxxxxx
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