1. COMP File Compare
COMP is a handy utility for comparing any two text files.
COMP creates a report clearly showing all of the differences
between the two files. It can save you hours of time from
hand-comparing two versions of a file. It can be used for
Batch files Legal briefs Newsletters
Computer programs Letters Parts lists
Contracts Mailing lists Reports
Documents Manuscripts Rosters
Instructions Memos Schedules
Inventories Messages Webpages
Invoices News articles
or any other type of text file.
COMP detects additions, deletions and changes of as little
as a single letter, or as much as 50 lines of text. It shows all
of the differences in a clear report that indicates the line
numbers in both files, and shows both blocks of changed text.
Even blank lines are clearly indicated.
TABLE OF CONTENTS
1. COMP File Compare
1.1. Using COMP
1.2. Installing COMP
1.3. Output file
1.1. Using COMP
COMP can be called and used two ways. You can name the
files directly in the COMP command, like this
comp oldversion newversion
or you can simply type COMP on the command line and let COMP
prompt you for the file names, like this
comp
You type the file names when COMP requests them, like this
File 1: oldversion
File 2: newversion
Output:
COMP will write the list of differences to the file COMP.LST
unless you want the list to go to a different file. You can
specify your own output file on the command line, like this
comp oldfile newfile diff
or let COMP prompt you for the file, like this
comp
File 1: members.old
File 2: members.new
Output: changes
In these examples the list of differences will be written to the
files DIFF and CHANGES, respectively. You can view the changes
with any text editor, such as Edit, Notebook, WordPad or NotePad,
or with any browser.
1.2. Installing COMP
You install COMP by copying it from the distribution disk to
any place on your computer where you have executable programs.
For example, to a directory called EXE or COM, or to a folder
within \Program Files\.
1.3. Output file
The difference list in the output file is designed to be
self-explanatory. Here is a typical difference list
File compare
File 1 = DOGS1
File 2 = DOGS2
File 1 Line 11
American Black and Tan Coonhound
File 2 Line 11
American Black & Tan Coonhound
File 1 Line 29
Bassett Artesian Normand
Bassett Bleu de Gascogne
Bassett Fauve de Bretagne
Bassett Hound
File 2 Line 29
Basset Artesian Normand
Basset Bleu de Gascogne
Basset Fauve de Bretagne
Basset Hound
File 1 Line 39
Belgian Shepherd
Belgian Shepherd Dog
File 2 Line 39
Belgian Shepherd Dog
File 1 Line 81
Chart Polski
File 2 Line 80
Cesky Fousek
Cesky Terrier
Chart Polski
File 1 Line 99
Dachshund
File 2 Line 96
...
Dachshund
5 differences
In this list, which compares the files Dogs1 and Dogs2, the 5
differences are
(1) On line 11 Dogs1 has "and" but Dogs2 has an ampersand &.
(2) On lines 29 through 32 Dogs1 has "Bassett" but Dogs2 has
"Basset".
(3) At line 39 Dogs1 has the line
Belgian Shepherd
which is missing in Dogs2.
(4) At line 80 Dogs2 has the 2 lines
Cesky Fousek
Cesky Terrier
which are absent in Dogs1.
(5) At line 96 Dogs2 has a blank line, which is missing in
Dogs1.
Blank lines are indicated by 3 dots ... to make them
visible.
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