ZIPSPLIT Split Utility for PKZIP (tm) Version 1.1 02-08-91

FreeWare (C) 1990-1991 Jon Harald Holm



ZipSplit split ZIP files into smaller ZIP files. This is useful when taking
backup of large ZIP files onto diskettes.

ZipSplit is FreeWare. Anyone is allowed to use ZipSplit for free. You don't
have to pay me anything! Please distribute ZipSplit as the original ZIP file
and take no more than a nominal charge for handling only.

Do you have any comments?

My address: Jon Harald Holm
Studpost 82, NTH
7034 Trondheim
Norway

Email: [email protected]




Files in the package:
---------------------

zipsplit.exe The split programme.
zipsplit.doc This file!
zipspl30.pif PIF file for Microsoft Windows 3.0
zipspl21.pif PIF file for Microsoft Windows 2.1


Installation:
-------------

You can copy the files anywhere you like. ZipSplit don't need any environment
variables.

If you want to use a PIF file, remember to edit the 'Program Filename' in the
PIF Editor. I recommend you rename the PIF file to ZIPSPLIT.PIF.


Usage:
------

If you just type zipsplit ('Enter'), you will get this:

----------------------------------------------------------------
ZIPSPLIT Split Utility for PKZIP (tm) Version 1.1 02-08-91
FreeWare (C) 1990-1991 Jon Harald Holm ZIPSPLIT for help

Usage: ZIPSPLIT source[.ZIP] target [size|disk]

source = name of file to split
target = target filename
size = split size in kB
disk = one of the predefined disk sizes; D360 D1.2 D720 D1.4
----------------------------------------------------------------

Maybe this is not enough help in the beginning, so I will explain each argument
in detail.

source:
This is the source filename. If you don't include any extension, ZipSplit
assumes the extension to be ZIP. The filename may include wildcards.

target:
This is the name you want to give your split files. Each split file will get a
number in the end of the filename to distinguish them from each other. Your
name will be truncated to give room for this number if necessary. If you don't
include any extension, ZipSplit will add ZIP.

size:
If you use this argument, then you can't use the 'disk' argument. 'size' is a
number which indicate the size in kB of each split file.

disk:
This is just a predefined size. It is used to split in sizes which fits
exactly onto diskettes, e.g. you want to store the files on 3.5" HD diskettes,
then you choose D1.4 as argument.

If you don't give 'size' or 'disk', then all available space on the target disk
will be used.

When the target disk don't have any more space, you will be prompted to change
disk or you may type in another target disk letter.


Examples:
---------

I will give two examples to remove any doubts about the use of ZipSplit.

1) Split the file to the C drive in chunks that fits 720 kB diskettes:

-------------------------------------------------------------
C:\TOOLS>zipsplit c:\test test d720

ZIPSPLIT Split Utility for PKZIP (tm) Version 1.1 02-08-91
FreeWare (C) 1990-1991 Jon Harald Holm ZIPSPLIT for help

Searching ZIP: C:\TEST.ZIP - Test ZIP file of 1137150 bytes
1) TEST1.ZIP
Size: 730070 Fill: 100%
2) TEST2.ZIP
Size: 407151 Fill: 55%
-------------------------------------------------------------


2) Split the file to the diskettes in the A and B drive:

-------------------------------------------------------------
C:\TOOLS>zipsplit c:\t* a:test

ZIPSPLIT Split Utility for PKZIP (tm) Version 1.1 02-08-91
FreeWare (C) 1990-1991 Jon Harald Holm ZIPSPLIT for help

Searching ZIP: C:\TEST.ZIP - Test ZIP file of 1137150 bytes
1) A:TEST1.ZIP
Size: 730070 Fill: 100%

Not enough space on target disk!
Change diskette and press 'Enter' when ready,
or enter the name of a new target disk => b

2) B:TEST2.ZIP
Size: 353239 Fill: 99%

Not enough space on target disk!
Change diskette and press 'Enter' when ready,
or enter the name of a new target disk => ('Enter')

3) B:TEST3.ZIP
Size: 53983 Fill: 14%
-------------------------------------------------------------


Miscellaneous:
--------------

ZipSplit can't split ZIP files to whatever size you want. This is because each
file inside the ZIP file must be in one file. If you want to split into
100 kB files, and one file in the ZIP file is 110 kB then one split file will
be bigger than 100 kB. Ref. "Program messages" below.

ZipSplit will store the largest file in a ZIP file first. If you split to
diskette and don't use any size argument, use the diskettes with largest free
space first.

The 'Fill' message after each ZIP file indicate how many percent of the given
size (rounded up to nearest 1024) have been used. Did you not give any size,
this percentage indicates how much of the disk free space you have used.

If you add the sizes of the split files, you will see that it is larger than
the size of the original file. This is because each split file is a ZIP file,
and includes the ZIP format data.


Program messages:
-----------------

* Not enough space on target disk!
Change diskette and press 'Enter' when ready,
or enter the name of a new target disk =>

The target disk is full! Is it a diskette then you change diskette and press
'Enter'. Otherwise you can type in a new drive letter and press 'Enter'.


* Can't be made smaller

The ZIP file include a file which is larger than the size given.
(See miscellaneous.)


* ERROR: File not found.

ZipSplit can't find the source file. Check if the path is correct spelt!


* ERROR: Undefined argument size.

The last argument on the commandline can't be recognized as a number or as a
predefined disk size.


* ERROR: is not a ZIP file.

The source file can't be recognised to have the ZIP format.
ZipSplit can only split ZIP files, but the extension don't have to be ZIP!


* ERROR: Not enough memory.

The amount of memory ZipSplit uses depend on the number of files in the ZIP
file (not the size of the ZIP file). If you get this error message, then I
suggest you manually split the file in two (pkunzip, pkzip) and then use
ZipSplit.


* ERROR: Can't open file .

ZipSplit can't open the source file! ZipSplit reads the source file twice.
You get this message if you remove the source file after it was located the
first time.


* ERROR: Target disk failed.

ZipSplit can't estimate the free space on the target disk. Something must be
wrong about the disk!


* ERROR: Can't create file

ZipSplit can't create the target file.


* ERROR: Can't close

ZipSplit can't close the target file.