bdiff(1)                         DG/UX R4.11                        bdiff(1)


NAME
       bdiff - big diff

SYNOPSIS
       bdiff file1 file2 [ n ] [-s]

DESCRIPTION
       Bdiff is used in a manner analogous to diff to find which lines in
       file1 and file2 must be changed to bring the files into agreement.
       Its purpose is to allow processing of files too large for diff.  If
       file1 (file2) is -, the standard input is read.

   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, that this does not suppress
              possible diagnostic messages from diff, which bdiff calls.

   Input and Output
       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 that because
       of the segmenting of the files, bdiff does not necessarily find a
       smallest sufficient set of file differences.

FILES
       /tmp/bd?????

DIAGNOSTICS
       Use help for explanations.

SEE ALSO
       diff(1), help(1)


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