bdiff - big diff
bdiff filename1 filename2
is used in a manner analogous to diff
to find which lines in
must be changed to bring the files into
agreement. Its purpose is to allow processing of files too large for
. If filename1 (filename2)
, the standard
input is read.
ignores lines common to the beginning of both files, splits the
remainder of each file into n
-line segments, and invokes diff
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
The options are:
- 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.
- 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.
(1) for explanations.