BDIFF(1) User Commands BDIFF(1)

NAME

bdiff - big diff

SYNOPSIS

bdiff filename1 filename2 [n] [-s]

DESCRIPTION

bdiff is used in a manner analogous to diff to find which lines in
filename1 and filename2 must be changed to bring the files into
agreement. Its purpose is to allow processing of files too large for
diff. If filename1 (filename2) is -, the standard input is read.


bdiff ignores lines common to the beginning of both files, splits the
remainder of each file into n-line segments, and invokes diff on
corresponding segments. If both optional arguments are specified,
they must appear in the order indicated above.


The output of bdiff is exactly that of diff, with line numbers
adjusted to account for the segmenting of the files (that is, to make
it look as if the files had been processed whole). Note: Because of
the segmenting of the files, bdiff does not necessarily find a
smallest sufficient set of file differences.

OPTIONS

n
The number of line segments. The value of n is 3500 by
default. If the optional third argument is given and it is
numeric, it is used as the value for n. This is useful in
those cases in which 3500-line segments are too large for
diff, causing it to fail.


-s
Specifies that no diagnostics are to be printed by bdiff
(silent option). Note: However, this does not suppress
possible diagnostic messages from diff, which bdiff calls.

USAGE

See largefile(7) for the description of the behavior of bdiff when
encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).

FILES

/tmp/bd?????

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+---------------+-----------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------+
|CSI | enabled |
+---------------+-----------------+

SEE ALSO

diff(1), attributes(7), largefile(7)

DIAGNOSTICS

Use help for explanations.

September 14, 1992 BDIFF(1)