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1987-08-15
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DDUP.DOC: Documentation for DDup v1.1
(c) Jean Lalonde, Montreal, Canada
August 14, 1987
History
-------
v1.0 (Apr 17, 87):
First release.
v1.1 (August 14, 87)
Accepts multiple filenames with exclusion list. New way to
specify multiple drives command.
DDup looks for similar files (according to options '/T', '/N' and '/S') and
prompt you for deletion or renaming of duplicated files.
DDup can act on three modes. On the default mode ('/T'), DDup look for twin
files (identical name, size, date and time) and allows you to delete one or
more duplicated files. Use this feature to clean-up your hard-disk by
removing twin files.
With option '/N', DDup look for files with identical names and *different*
size, date or time. DDup will prompt you for renaming one or more files with
identical names. Use this feature if you want to give different names to
different files (see cautions below).
With option '/S', DDup look for files with identical specs (size, date and
time) and *different* names. DDup will prompt you for renaming one or more
files with identical specs. Use this feature to trace identical files stored
under different names (see cautions below).
CAUTIONS: DDup do not verify the content of files but only their inscription
in directories.
With '/I' (default), take care before deleting a file. It is rare
but files in two directories may have the same name and specs but
being different files with different content.
With '/N', rename files only if you are sure of their content and
if you know that those files are not required by any program under
those names.
With '/S', be aware that it is frequent for two different files to
have the same specs. Rename files only if you are sure of their
content and if you know that those files are not required by any
program under those names in their directories.
SYNTAX: 'DDup drive(s):\directory\files [options]'
'drive(s)' drives to scan, eg: 'C:' or 'CDE:', default is current
drive.
'directory' to scan from, default is current directory. To scan
all a drive, specify the root directory '\'.
'files' to scan, wild cards allowed, default is all files
'*.*', multiple filenames (eg: '*.COM+*.EXE+*.BAT')
and an exclusion list after a slash (eg: '*.*/*.NOT')
are allowed.
'options' '/T' (default) to look for twin files with identical
name, size and date-time and prompt you for deletion.
'/N' to look for files with identical name but different
specs (size or date-time) and prompt you for renaming.
'/S' to look for files with identical specs (date-time
and size) but different names and prompt you for
renaming.
'/D' for discrete scanning, '/H' for help,
LIMITS: DDup can scan an unlimited number of files on an unlimited number
of drives simultanously. Of course, DDup is limited by the RAM
available. It can handle more than 2,400 files per 100k available.
It should be quite enough for 80 megs of storage with 640k systems.
DDup can prompt you for deleting or renaming up to 20 duplicated
files. If you have more than 20 duplicates of the same file (or
name/spec), you will have to run DDup again.
USES: C>DDUP Default use, scan for twin files down from the
current directory on the current drive.
C>DDUP \DIR\*.* Scan all files of \DIR and its children
directories on the current drive.
C>DDUP CD:\ /S Scan all files of drives C: and D: for
duplicated specs.
C>DDUP \*.ARC+*.DAT Scan all *.ARC and *.DAT files of the
current drive.
C>DDUP *.*/*.COM+*.EXE Scan all files down from the current
directory except *.COM and *.EXE files.
C>DDUP /D /N Scan discretely for duplicated names.
I hope DDup will be usefull to you.
You can send me comments or reports to:
Jean Lalonde
P.O. BOX 721
Station "R"
Montreal
CANADA
H2S-3M4
You can join me online on Compuserve (ID: 76606,671), GEnie
(ID: J.Lalonde) or on BIX Info Exchange (Bix name: jlalonde).
DDup is written in MODULA-2/86 Rel. 2.0 (A), PC/MS-DOS 8088/8086,
LOGITECH, (C) Copyright 1983, 1984, 1985, 1986. DDup uses
standard PC/MS-DOS functions, version 3.0 or more.
You can use or redistribute this program freely as long as it is
done at no cost (except floppy's cost), if this documentation file
and the copyright remain intact. Modula-2 sources of this program
are available. To receive those text files, please send me a $25
check.
Enjoy DDup!
Jean Lalonde
August 14, 1987