bdifffile1file2[options]
Compare file1 with file2 and report the differing
lines. bdiff splits the files and then runs diff,
allowing it to act on files that would normally be
too large to handle. bdiff reads standard input if one of
the files is - . See also diff.
nSplit each file into n-line segments (default is 3500).
This option must be listed first.
Suppress error messages from bdiff (but not from diff).