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- 4HIST.BTM
- Free 4DOS utility: command history duplicate entry deleter
- Version 1.00 - September 08, 1993
- (c) 1993
- by
- David Daniel Anderson
- Reign Ware
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- 4HIST removes all superfluous lines from the current 4DOS command history
- list. A tiny batch file is included to automate processing.
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- Usage: 4HIST file [/i (ignore case)]
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- 4HIST can be run from the command line or via a batch file (4H.BTM is
- included for this purpose).
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- 4HIST takes one or two parameters. The first must be the name of the file
- containing the command history list. You can produce this file in 4DOS by
- entering: HISTORY >file (use "HISTORY /R file" to read the list back into
- memory).
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- The second parameter is optional. It is a slash followed by the letter
- "i" or "I". This parameter instructs 4HIST to ignore case when
- determining duplicates, which slows 4HIST down considerably. Default is
- to only recognize -exact- duplicates.
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- See the included batch file 4H.BTM for an example of how to use 4HIST.
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- 4HIST provides some basic information about the data being processed:
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- 1) It displays a "twirling bar" which pulses once for each command entry
- processed. The faster the bar twirls, the faster 4HIST is working.
- 2) When done, it tells how many commands existed prior to processing, and
- how many exist afterwards.
- 3) When done, it tells how many bytes the commands used in the 4DOS memory
- allocation before processing, and how many they will use afterwards.
- NOTE: this figure is -not- the same as the file size. This is because
- in a file, both a carriage return -and- a line feed are appended to
- each line, but in RAM, only one is needed.
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- NOTE: This program may work, with modifications, with other command
- history programs. I can not, and probably will not, test it.
- However, if you can and do, I would appreciate hearing how it
- performs. I will distribute any modified copies you send me
- (on disk or simply a printed source listing).
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- 4DOS (r) is a registered trademark of JP Software Inc.
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