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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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DIFF3(1) User Commands DIFF3(1)
diff3 - compare three files line by line
diff3 [OPTION]... MYFILE OLDFILE YOURFILE
Compare three files line by line.
Mandatory arguments to long options are mandatory for short
options too.
-A, --show-all
output all changes, bracketing conflicts
-e, --ed
output ed script incorporating changes from OLDFILE to
YOURFILE into MYFILE
-E, --show-overlap
like -e, but bracket conflicts
-3, --easy-only
like -e, but incorporate only nonoverlapping changes
-x, --overlap-only
like -e, but incorporate only overlapping changes
-X like -x, but bracket conflicts
-i append 'w' and 'q' commands to ed scripts
-m, --merge
output actual merged file, according to -A if no other
options are given
-a, --text
treat all files as text
--strip-trailing-cr
strip trailing carriage return on input
-T, --initial-tab
make tabs line up by prepending a tab
--diff-program=PROGRAM
use PROGRAM to compare files
-L, --label=LABEL
use LABEL instead of file name (can be repeated up to three
times)
--help display this help and exit
-v, --version
output version information and exit
The default output format is a somewhat human-readable
representation of the changes.
The -e, -E, -x, -X (and corresponding long) options cause an ed
script to be output instead of the default.
Finally, the -m (--merge) option causes diff3 to do the merge
internally and output the actual merged file. For unusual input,
this is more robust than using ed.
If a FILE is '-', read standard input. Exit status is 0 if
successful, 1 if conflicts, 2 if trouble.
Written by Randy Smith.
Report bugs to: bug-diffutils@gnu.org
GNU diffutils home page: <https://www.gnu.org/software/diffutils/>
General help using GNU software: <https://www.gnu.org/gethelp/>
Copyright © 2025 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
cmp(1), diff(1), sdiff(1)
The full documentation for diff3 is maintained as a Texinfo
manual. If the info and diff3 programs are properly installed at
your site, the command
info diff3
should give you access to the complete manual.
This page is part of the diffutils (GNU diff utilities) project.
Information about the project can be found at
⟨http://savannah.gnu.org/projects/diffutils/⟩. If you have a bug
report for this manual page, send it to bug-diffutils@gnu.org.
This page was obtained from the project's upstream Git repository
⟨git://git.savannah.gnu.org/diffutils.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-04-27.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
diffutils 3.12.8-2591 August 2025 DIFF3(1)
Pages that refer to this page: cmp(1), diff(1), patch(1), sdiff(1)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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