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Annotation of researchv10dc/man/manb/bdiff.1, revision 1.1.1.1

1.1       root        1: .TH BDIFF 1
                      2: .SH NAME
                      3: bdiff \- big diff
                      4: .SH SYNOPSIS
                      5: .B bdiff
                      6: file1 file2 [n]
                      7: .RB [ \-s ]
                      8: .SH DESCRIPTION
                      9: .I Bdiff\^
                     10: is used in a manner analogous to
                     11: .IR diff (1)
                     12: to find which lines must be changed in two files to bring them
                     13: into agreement.
                     14: Its purpose is to allow processing of files which are too large
                     15: for
                     16: .IR diff .
                     17: .I Bdiff\^
                     18: ignores lines common to the beginning of both files,
                     19: splits the remainder of each file into
                     20: .IR n -line
                     21: segments, and invokes
                     22: .I diff\^
                     23: upon corresponding segments.
                     24: The value of
                     25: .I n\^
                     26: is 3500 by default.
                     27: If the optional third argument is given, and it is
                     28: numeric, it is used as the value for
                     29: .IR n .
                     30: This is useful in those cases in which 3500-line segments are
                     31: too large for
                     32: .IR diff ,
                     33: causing it to fail.
                     34: If
                     35: .I file1\^
                     36: .RI ( file2 )
                     37: is \fB\-\fR,
                     38: the standard input is read.
                     39: The optional
                     40: .B \-s
                     41: (silent) argument specifies that
                     42: no diagnostics are to be printed by
                     43: .I bdiff\^
                     44: (note, however, that this does not suppress possible exclamations by
                     45: .IR diff .
                     46: If both optional arguments are specified, they must appear in the
                     47: order indicated above.
                     48: .PP
                     49: The output of
                     50: .I bdiff\^
                     51: is exactly that of
                     52: .IR diff ,
                     53: with line numbers adjusted to account for the segmenting of the files
                     54: (that is, to make it look as if the files had been processed
                     55: whole).
                     56: Note that
                     57: because of the segmenting of the files,
                     58: .I bdiff\^
                     59: does not necessarily find a
                     60: smallest sufficient set of file differences.
                     61: .SH FILES
                     62: /tmp/bd?????
                     63: .SH "SEE ALSO"
                     64: diff(1).
                     65: .SH DIAGNOSTICS
                     66: Use
                     67: .IR help (1)
                     68: for explanations.

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