12-08-2012
This looks like you try to reinvent the "cut" program. But "cut" already exists, so it seems rather pointless. Have a look at the man page of cut.
I hope this helps.
bakunin
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HOZ(1) User Commands HOZ(1)
NAME
hoz - file splitter that uses the hacha file format
SYNOPSIS
hoz [-pvf] [-c size[K|M]] [-o outpath] inputfname
ghoz
DESCRIPTION
HOZ is a file splitter, which uses the same file format as the popular 'Hacha' program.
OPTIONS
-c --cut
cut (file->pieces)
-p --paste
paste (pieces->file)
-v --verbose
verbose output
-f --force
force overwrite of file when pasting
-o --outpath
specify an output directory
-h --help
print this help, then exit
--version
print hoz program version number, then exit
USAGE
There are two basic operations: cut and paste. Cut will 'split' a file in pieces. The size of each piece is passed as an option. Each piece
will have a numeric extension, starting with 0. So for instance if you 'cut' a file called 'foo.iso', the pieces will be named 'foo.iso.0',
'foo.iso.1' and so on.
Paste will 'merge' these pieces and generate and exact copy of the original file.
ghoz is the graphical version of hoz, which uses a GTK GUI interface.
SEE ALSO
You can find more information at http://hoz.sourceforge.net/
hoz 1.65 August 2008 HOZ(1)