.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.40.4.
.TH DIFF3 "1" "May 2017" "diffutils 3.6" "User Commands"
.SH NAME
diff3 \- compare three files line by line
.SH SYNOPSIS
.B diff3
[\fIOPTION\fR]... \fIMYFILE OLDFILE YOURFILE\fR
.SH DESCRIPTION
Compare three files line by line.
.PP
Mandatory arguments to long options are mandatory for short options too.
.TP
\fB\-A\fR, \fB\-\-show\-all\fR
output all changes, bracketing conflicts
.TP
\fB\-e\fR, \fB\-\-ed\fR
output ed script incorporating changes
from OLDFILE to YOURFILE into MYFILE
.TP
\fB\-E\fR, \fB\-\-show\-overlap\fR
like \fB\-e\fR, but bracket conflicts
.TP
\fB\-3\fR, \fB\-\-easy\-only\fR
like \fB\-e\fR, but incorporate only nonoverlapping changes
.TP
\fB\-x\fR, \fB\-\-overlap\-only\fR
like \fB\-e\fR, but incorporate only overlapping changes
.TP
\fB\-X\fR
like \fB\-x\fR, but bracket conflicts
.TP
\fB\-i\fR
append 'w' and 'q' commands to ed scripts
.TP
\fB\-m\fR, \fB\-\-merge\fR
output actual merged file, according to
\fB\-A\fR if no other options are given
.TP
\fB\-a\fR, \fB\-\-text\fR
treat all files as text
.TP
\fB\-\-strip\-trailing\-cr\fR
strip trailing carriage return on input
.TP
\fB\-T\fR, \fB\-\-initial\-tab\fR
make tabs line up by prepending a tab
.TP
\fB\-\-diff\-program\fR=\fIPROGRAM\fR
use PROGRAM to compare files
.TP
\fB\-L\fR, \fB\-\-label\fR=\fILABEL\fR
use LABEL instead of file name
(can be repeated up to three times)
.TP
\fB\-\-help\fR
display this help and exit
.TP
\fB\-v\fR, \fB\-\-version\fR
output version information and exit
.PP
The default output format is a somewhat human\-readable representation of
the changes.
.PP
The \fB\-e\fR, \fB\-E\fR, \fB\-x\fR, \fB\-X\fR (and corresponding long) options cause an ed script
to be output instead of the default.
.PP
Finally, the \fB\-m\fR (\fB\-\-merge\fR) option causes diff3 to do the merge internally
and output the actual merged file.  For unusual input, this is more
robust than using ed.
.PP
If a FILE is '\-', read standard input.
Exit status is 0 if successful, 1 if conflicts, 2 if trouble.
.SH AUTHOR
Written by Randy Smith.
.SH "REPORTING BUGS"
Report bugs to: bug\-diffutils@gnu.org
.br
GNU diffutils home page: <http://www.gnu.org/software/diffutils/>
.br
General help using GNU software: <http://www.gnu.org/gethelp/>
.SH COPYRIGHT
Copyright \(co 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
cmp(1), diff(1), sdiff(1)
.PP
The full documentation for
.B diff3
is maintained as a Texinfo manual.  If the
.B info
and
.B diff3
programs are properly installed at your site, the command
.IP
.B info diff3
.PP
should give you access to the complete manual.