BDIFF(1)                GENIX Programmer's Manual                BDIFF(1)



      NAME
           bdiff - big diff

      SYNOPSIS
           bdiff file1 file2 [n] [-s]

      DESCRIPTION
           Bdiff is used in a manner analogous to diff(1) to find  which  lines
           must be changed in two files to bring them into agreement.  Its pur-
           pose is to allow processing of files that are too  large  for  diff.
           Bdiff  ignores  lines  common to the beginning of both files, splits
           the remainder of each file into n-line segments,  and  invokes  diff
           upon corresponding 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.  If  file1
           (file2)  is -, the standard input is read.  The optional -s (silent)
           argument specifies that no diagnostics are to be  printed  by  bdiff
           (note, however, that this does not suppress possible exclamations by
           diff.  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?????

      SEE ALSO
           diff(1).

      DIAGNOSTICS
           Use sccshelp(1) for explanations.



















      Printed 11/16/83                                                        1