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1990-02-13
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4KB
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89 lines
CHOP, version 1.0
_________________
Written in Turbo Pascal
By
The Tsou Brothers (Joe & Robert)
CHOP is a utility to divide a file into two equal or nearly
equal portions. The type of file chopped is unimportant, it
may be a text file or a binary file. In short, CHOP is
effective on DOS files of all types or sizes - even COM, EXE,
or ZIP files may be chopped by CHOP.
UNCHOP, on the other hand, is a utility to reconstruct the
files that were chopped up by CHOP. What's special about
UNCHOP is that when a COM or EXE file is thus reconstructed, it
will still be executable. When a ZIP file is reconstructed, it
will still be "unzippable."
When you run CHOP on a file, two separate files named HEAD and
TAIL will emerge. The original file will stay intact. The
resultant HEAD and TAIL files may be copied and stored on
separate floppy disks as desired - they are indeed two separate
files. One word of caution, one should never attempt to
further subdivide the HEAD or TAIL files using CHOP.
To reunite the HEAD and TAIL files, just place both files on
the same subdirectory and run UNCHOP on them. Make sure the
files are appropriately named as HEAD and TAIL specifically and
not renamed to something else. UNCHOP will look for these files
to rejoin them into a single file. When executing UNCHOP, you
may give the path and the name of the restored file at the
command line. If you do not specify a path or a name at the
command line, UNCHOP will name the resultant file JOIN.FIL and
deposit it in the current subdirectory. Of course, after
rejoining, HEAD and TAIL will no longer exist as separate
entities.
The Story Behind CHOP
_____________________
As the old adage goes, necessity is the father (or is that
mother?) of invention. The idea for CHOP came to the authors
recently when one of the authors decided to mail a rather large
software program to the other author via U.S. mail in 360K disk
form (alas, that author is still getting along with an old XT
with a 360K floppy drive.) The problem arose when one of the
files in the program was over 600K bytes long. Even after
compression using one of the popular file compression programs,
the file was still over 400K long - too large to fit into a
360K floppy disk. Being ignorant of any other possible
solutions, CHOP was written and the problem was solved.
DISCLAIMER
__________
The authors do not give warranty of any kind, either written or
implied, for this program. The user assumes all risks and
responsibilities when using CHOP.
Joe M. W. Tsou Robert M. W. Tsou
Irving, Texas Rancho P. V., CA
_______________________________________________________________