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ADDENDUM.DOC
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1990-03-15
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PKZIP, PKUNZIP and PKSFX Version 1.1 includes several new features.
They are described in this addendum to the PKZIP, PKUNZIP and PKSFX
Version 1.0 manual.
PKZIP
The following new features have been incorporated into the PKZIP
Version 1.1 software release.
-3 Disable 80386 instruction usage
-----------------------------------
This option is available for users with 80386 type computers.
It is used to turn OFF the added 80386 instructions or
registers. When these instructions are available, PKZIP will
utilize them to allow the program to function even faster.
However, if you are running a different program that may
conflict with use of the 80386 instructions, you can disable
them by using this command.
The 80386 instructions will be disabled only for the current
PKZIP operation. They will then be enabled immediately after
the command operation is completed.
C:\PKWARE> PKZIP FILES.ZIP -3 -a *.DOC
In the above example, all of the *.DOC files in the current
directory will be added to the ZIP file, FILES.ZIP. The 80386
instructions will be disabled while the command is being
executed.
You can also disable the 80386 instructions when you start
PKZIP by using the PKNO386 environment variable. To set the
environment variable, type PKNO386=xxxx, where "xxxx" is any
string you choose. If the string PKNO386 is present in the
environment, then PKZIP (and PKUNZIP) will not use the 80386
instructions or registers.
To enable the 80386 instructions after they have been
disabled, type SET PKNO386=<Enter>, where <Enter> refers to
the Enter key.
NOTE: Disabling the 80386 usage will make PKZIP run up to
twenty percent slower than if the 80386 instructions
are used.
PKWARE Version 1.1 Addendum 1
-^ Echo the command line
-------------------------
This command is used to display the PKZIP command that you
entered on the console. It is useful for example, when you
are using the View file option; the file specifications that
you entered will be echoed on the console along with the
command output.
E:\> PKZIP docs.zip -vd -^ *.doc
In this example, technical information about all of the *.doc
files included in the DOCS.ZIP ZIP file will be displayed.
The information will be sorted by date, and the command line
will be redisplayed on the screen above the output.
-x@file Exclude list file
--------------------------
This option is used to exclude a List File from the current
operation. Recall that a List File is a file containing a
list of files that are grouped together. List Files can be
used with all the PKZIP and PKUNZIP command options. They are
always preceded by the @ symbol on the command line.
This command can be useful when you want to exclude a few
files from an operation and the DOS wild cards cannot be used
effectively.
C:\ACTNG> PKZIP STORE *.* -x@ACCOUNTS.LIS
In the above example, all of the files in the current
directory, except for the List File, ACCOUNTS.LIS, will be
compressed into the ZIP file STORE.ZIP.
-$[d] Save volume label
-------------------------
This command is used to save the volume label of a specific
drive along with the ZIP file. The default drive is the
current drive, unless another is specified. The drive letter
is not saved in the ZIP file, only the volume label.
C:\ACCTNG> PKZIP FILES.TAX -a -$ *.*
In the above example, all of the files in the current directory
will be compressed into the ZIP file, FILES.TAX. They will be
stored along with the volume label for the C: drive.
PKWARE Version 1.1 Addendum 2
-t ZIP only files with a date equal to or later than specified
---------------------------------------------------------------
With this option, you can specify a date so that only files
with a date that is equal to or more recent than the date
specified will be included in the PKZIP operation. If no date
is specified, today's date will be used by default.
When specifying a date, use six digits in the following
format: mmddyy. For example, February 14, l990 will be
listed: -t021490. This is true for all computers setup as
American. If your computer is setup as European, use the
following format: ddmmyy. If your computer is setup as
Japanese, use the following format: yymmdd. If you are not
sure how your computer is setup, consult your user's manual.
C:\BACKUP> PKZIP BAKS.ZIP -t010190
In this example, all files in the current directory with a
date later than or equal to January 1, l990 will be compressed
into the ZIP file, BAKS.ZIP.
-ei Implode files only
------------------------
This option is used along with the mini-PKSFX program,
PKSFXjr. Only files that have been imploded can be extracted
with PKSFXjr. Shrunk files cannot be extracted. In order to
create a PKSFXjr.EXE file, this option must be used.
E:\BATS> PKZIP EXT.ZIP -ei
In this example, all of the files in the current directory
will be compressed into the ZIP file, EXT.ZIP. All of the
files will be imploded.
PKZIP Configuration File
------------------------
The PKZIP Configuration file can be used to set parameters to
values other than the normal default values. There are three
additional Configuration file options available. They are
explained on the following page.
PKWARE Version 1.1 Addendum 3
SHRINK > nnnnn
Where nnnn is some number specifying that files that are
greater than this number are to be Shrunk. This option is
used to save time when you are compressing large files.
Typically, large files take longer to compress when the
imploding method is used.
LISTCHAR=
This option is used to designate a special character to be used
to indicate a List file. By default the @ character is used,
as in @FILE. If you want to use @ as the first character in a
file name, you can designate an alternate character to be used
to indicate List files. For example, you could use the # or
the % characters.
OPTIONCHAR=
This option is used to designate a special character to be
used to indicate a command on the command line. By default,
the minus sign - is used. If you want to use the minus sign
as the first character in a file name, you can designate an
alternate character to be used to indicate a command. For
example, you could use the / character.
Also, PKZIP 1.1 will now search for the Configuration file in
the following order:
1. In the current directory.
2. In the path specified by the PKZIP.CFG= environment
variable.
3. In the path where PKZIP was started from, if DOS version
greater than or equal to 3.x is being used.
Additional Error Code
---------------------
There is an additional error code available with PKZIP version
1.1. PKZIP will exit with an errorlevel