MERGE

Section: User Commands (1)
Updated: 1990/08/29
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NAME

merge - three-way file merge  

SYNOPSIS

merge [ -L label1 [ -L label3 ] ] [ -p ] [ -q ] file1 file2 file3  

DESCRIPTION

merge incorporates all changes that lead from file2 to file3 into file1. The result goes to standard output if -p is present, into file1 otherwise. merge is useful for combining separate changes to an original. Suppose file2 is the original, and both file1 and file3 are modifications of file2. Then merge combines both changes.

An overlap occurs if both file1 and file3 have changes in a common segment of lines. merge outputs a message if overlaps occurred, and includes both alternatives in the result. The alternatives are delimited as follows:

<<<<<<< file1
lines in file1
=======
lines in file3
>>>>>>> file3

If there are overlaps, the user should edit the result and delete one of the alternatives. If the -L label1 and -L label3 options are given, the labels are output in place of the names file1 and file3 in overlap reports. Any overlap message is suppressed if the -q option is given.  

DIAGNOSTICS

Exit status is 0 for no overlaps, 1 for some overlaps, 2 for trouble.  

IDENTIFICATION

Author: Walter F. Tichy.
Revision Number: 5.1; Release Date: 1990/08/29.
Copyright © 1982, 1988, 1989 by Walter F. Tichy.
Copyright © 1990 by Paul Eggert.  

SEE ALSO

diff3(1), diff(1), rcsmerge(1), co(1).


 

Index

NAME
SYNOPSIS
DESCRIPTION
DIAGNOSTICS
IDENTIFICATION
SEE ALSO

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