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- CP
-
- This is my absolute favorite of all the programs in my library,
- and also one of the most frequently used. It is a file copy
- program, replacing PIP.
-
- Unfortunately, I can't provide the program in this file, since CP
- is a proprietary program. CP.C is a program provided with the BDS
- C compiler, and is proprietary to BD Software, Inc.
-
- So why provide the DOC file? Partly because CP is so important a
- part of my library, and partly because, while proprietary, CP is
- not that hard to get ahold of. Many users of CP/M systems have
- BDS C (if you don't, waste no more time getting a copy), and Leor
- Zolman of BDS has never been a stickler for Copyright laws. His
- TELEDIT modem program, for example, which is also included in the
- compiler package, is widely available on BBS's.CP has a very
- flexible command format. The most straightforward usage is simply
-
- CP <from> <to>
-
- where <from> and <to> are unambiguous filenames. The filenames,
- can, of course, include drive ID's. BDS also allows user areas,
- with a rather unusual notation:
-
- area/drive:
-
- Example:
-
- CP 0/A:FOO.BAR 15/B:XYZZY.COM
-
- If the file is to be copied with the same name, the destination
- name can be omitted, leaving just the destination user/drive:
-
- CP FOO.BAR B:
-
- This is probably the most often-used form of the command.
-
- With this second form, you can also have multiple source
- filenames, possibly including wildcards:
-
- CP A.COM B.COM *.C B:
-
- CP is smart enough to figure out that the last argument should be
- a user/drive designation, for this form of the command.
-
- Finally, there is one last neat feature: the character '.' stands
- for the current user area/drive. So the command
-
- CP B:*.COM .
-
- says to copy all COM files on B: to the current area/drive.
-
- Like most good programs, if you make a syntax error on the
- command line, CP will give you an error message with correct
- usage.
-
- I have found one small bug in CP. It can copy specific files from
- any user area/drive to any other. It can also copy lists of
- files, including files with wildcard names, to any area/drive.
- But it gets confused if you ask it to copy wildcard names from
- a user area other than the default one. That is, it can handle
-
- CP *.COM 4/B:
-
- but not
-
- CP 4/B:*.COM .
-
- In this situation, CP doesn't crash or do anything nasty ... it
- just tells you that it can't find the file. The solution is easy.
- Just change user areas to area 4 (in the example), so you can use
- the first form.
-
- I frankly don't know how hard a time you will have getting a copy
- of CP without getting it from BDS. I hope you will not find it
- too difficult. It is entirely possible that it would be OK to
- distribute the object of CP.COM, as long as one doesn't
- distribute source. I don't know enough about the legalities of
- such, and would rather err on the side of caution. If anyone can
- establish that it's OK to distribute CP.COM, I will do so.
-
- If you cannot find a copy of CP, don't despair! A public-domain
- version, written in assembler language, is in the works by yours
- truly.
-
- Jack W. Crenshaw
- P.O. Box 15888
- Tampa, Fla. 33684
- CIS 72325,1327
-