DIFF3(1)			  User Commands				DIFF3(1)

NAME
     diff3 - compare three files line by line

SYNOPSIS
     diff3 [OPTION]... MYFILE OLDFILE YOURFILE

DESCRIPTION
     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.

AUTHOR
     Written by Randy Smith.

REPORTING BUGS
     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
     Copyright	(C) 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.

SEE ALSO
     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.

diffutils 3.12			   April 2025				DIFF3(1)