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File Comparison Utility (FC)
1751
How FC Reports Differences
FC
reports
the
differences
between
the
two
files
you
specify by
displaying
the
first filename, followed by
the
lines
that
differ
between
the
files, followed by
the
first line
to
match
in
both
files.
FC
then
displays the name
of
the
second
file, followed by
the
lines
that
are
different, followed
by
the
first line that matches.
The
default for
the
number
of
lines
to
match
between
the
files is
2.
(If
you
want
to
change this default, specify
the
number
of
lines
with
the
Innnn
switch.)
Example:
•••••
filel
difference
1 st matching line in
file
1
and
file2
next
matching line
infilel
andfile2
.....
file2
difference
1st matching line
infilel
andfile2
next
matching line
infilel
andfile2
If
the
number
of
lines in
the
internal buffer is less than
the
number
of
consecutive, differing lines,
the
program will stop.
FC
then
displays
the
following message:
resynch
failed.
Files
are
too
different.
FC
then
displays
the
contents
of
the
internal buffer and
returns
to
the
MS-DOS
default drive
prompt
(for
example,
A>
).
Redirecting
FC
Output to a File
Unless you redirect
the
FC
output
to
a file, the differences and
matches
between
the
two
files
you
specify will
be
displayed
on
your
screen. You can easily
redirect
the
FC
output
using
the
MS-
DOS
redirection
symbols
(see
Chapter 2, "About Commands").
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