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diff3
The diff3
command compares three files and outputs descriptions
of their differences. Its arguments are as follows:
diff3 options… mine older yours |
The files to compare are mine, older, and yours.
At most one of these three file names may be ‘-’,
which tells diff3
to read the standard input for that file.
An exit status of 0 means diff3
was successful, 1 means some
conflicts were found, and 2 means trouble.
14.1 Options to diff3 | Summary of options to diff3 .
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diff3
Below is a summary of all of the options that GNU diff3
accepts. Multiple single letter options (unless they take an argument)
can be combined into a single command line argument.
Treat all files as text and compare them line-by-line, even if they do not appear to be text. See section Binary Files and Forcing Text Comparisons.
Incorporate all unmerged changes from older to yours into mine, surrounding conflicts with bracket lines. See section Marking Conflicts.
Use the compatible comparison program program to compare files
instead of diff
.
Generate an ed
script that incorporates all the changes from
older to yours into mine. See section Selecting Which Changes to Incorporate.
Like ‘-e’, except bracket lines from overlapping changes’ first and third files. See section Marking Conflicts. With ‘-E’, an overlapping change looks like this:
<<<<<<< mine lines from mine ======= lines from yours >>>>>>> yours |
Output a summary of usage and then exit.
Generate ‘w’ and ‘q’ commands at the end of the ed
script for System V compatibility. This option must be combined with
one of the ‘-AeExX3’ options, and may not be combined with ‘-m’.
See section Saving the Changed File.
Use the label label for the brackets output by the ‘-A’, ‘-E’ and ‘-X’ options. This option may be given up to three times, one for each input file. The default labels are the names of the input files. Thus ‘diff3 --label X --label Y --label Z -m A B C’ acts like ‘diff3 -m A B C’, except that the output looks like it came from files named ‘X’, ‘Y’ and ‘Z’ rather than from files named ‘A’, ‘B’ and ‘C’. See section Marking Conflicts.
Apply the edit script to the first file and send the result to standard
output. Unlike piping the output from diff3
to ed
, this
works even for binary files and incomplete lines. ‘-A’ is assumed
if no edit script option is specified. See section Generating the Merged Output Directly.
Strip any trailing carriage return at the end of an input line. See section Binary Files and Forcing Text Comparisons.
Output a tab rather than two spaces before the text of a line in normal format. This causes the alignment of tabs in the line to look normal. See section Preserving Tab Stop Alignment.
Output version information and then exit.
Like ‘-e’, except output only the overlapping changes. See section Selecting Which Changes to Incorporate.
Like ‘-E’, except output only the overlapping changes. In other words, like ‘-x’, except bracket changes as in ‘-E’. See section Marking Conflicts.
Like ‘-e’, except output only the nonoverlapping changes. See section Selecting Which Changes to Incorporate.
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