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diff3(C)


diff3 -- compare three files

Syntax

diff3 [ -ex3 ] file1 file2 file3

Description

diff3 compares three versions of a file, and publishes disagreeing ranges of text flagged with these codes:

====
all three files differ

====1
file1 is different

====2
file2 is different

====3
file3 is different
The type of change suffered in converting a given range of a given file to some other range is indicated in one of these ways:

f : n1 a
Text is to be appended after line number n1 in file f, where f = 1, 2, or 3.

f : n1 , n2 c
Text is to be changed in the range line n1 to line n2. If n1 = n2, the range may be abbreviated to n1.
The original contents of the range follow immediately after a c indication. When the contents of two files are identical, the contents of the lower-numbered file are suppressed.

Options are:


-e
Write a script for the editor ed(C) on the standard output that will incorporate into file1 all changes between file2 and file3, that is, the changes that normally would be flagged ==== and ====3.

-x
Write an ed script on the standard output to incorporate changes flagged with ====.

-3
Write an ed script on the standard output to incorporate changes flagged with ====3.

Examples

Produce an ed script that will incorporate into file1 all changes between file2 and file3:

diff3 -e file1 file2 file3 > script

Apply the editing script to file1:

(cat script; echo '1,$p') | ed - file1

Perform the above operations as a pipeline:

diff3 -e file1 file2 file3 | ed - file1

Limitations

None of the options work properly for lines consisting of a single period.

The input file size limit is 64KB.

Files


/tmp/d3*

/usr/lib/diff3prog

See also

diff(C), ed(C)
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003