diff3(1)diff3(1)Namediff3 - 3-way differential file comparison
Syntaxdiff3 [-ex3] file1 file2 file3
The command compares three versions of a file, and publishes the ranges
of text that disagree, flagged with the following codes:
==== all three files differ
====1 file1 is different
====2 file2 is different
====3 file3 is different
The type of change needed to convert a given range of a given file to
some other 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 follows immediately after a c indi‐
cation. When the contents of two files are identical, the contents of
the lower-numbered file is suppressed.
Options-3 Produces an editor script containing the changes between file1 and
file2 that are to be incorporated into file3.
-e Produces an editor script containing the changes between
file2 and file3 that are to be incorporated into file1.
-x Produces an editor script containing the changes among all
Under the -e option, publishes a script for the editor that incorpo‐
rates into file1 all changes between file2 and file3 - that is, the
changes that would normally be flagged ==== and ====3. Option -x (-3)
produces a script to incorporate only changes flagged ==== (====3).
The following command applies the resulting script to `file1':
(cat script; echo ´1,$p´) ⎪ ed - file1
Text lines that consist of a single `.' defeat -e.
See Alsocmp(1), comm(1), diff(1), dffmk(1), join(1), sccsdiff(1), uniq(1)diff3(1)