Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #466
Difficulty: Medium
NTP was designed by David L. Mills of the University of New York.
True or False?
Linux & Unix Commands - Search Man Pages

diff3(1) [bsd man page]

DIFF3(1)						      General Commands Manual							  DIFF3(1)

NAME
diff3 - 3-way differential file comparison SYNOPSIS
diff3 [ -exEX3 ] file1 file2 file3 DESCRIPTION
Diff3 compares three versions of a file, and publishes disagreeing ranges of text flagged with these codes: ==== all three files differ ====1 file1 is different ====2 file2 is different ====3 file3 is different The type of change suffered in converting a given range of a given file to some other is indicated in one of these ways: f : n1 a Text is to be appended after line number n1 in file f, where f = 1, 2, or 3. f : n1 , n2 c Text is to be changed in the range line n1 to line n2. If n1 = n2, the range may be abbreviated to n1. The original contents of the range follows immediately after a c indication. When the contents of two files are identical, the contents of the lower-numbered file is suppressed. Under the -e option, diff3 publishes a script for the editor ed that will incorporate into file1 all changes between file2 and file3, i.e. the changes that normally would be flagged ==== and ====3. Option -x (-3) produces a script to incorporate only changes flagged ==== (====3). The following command will apply the resulting script to `file1'. (cat script; echo '1,$p') | ed - file1 The -E and -X are similar to -e and -x, respectively, but treat overlapping changes (i.e., changes that would be flagged with ==== in the normal listing) differently. The overlapping lines from both files will be inserted by the edit script, bracketed by "<<<<<<" and ">>>>>>" lines. For example, suppose lines 7-8 are changed in both file1 and file2. Applying the edit script generated by the command "diff3 -E file1 file2 file3" to file1 results in the file: lines 1-6 of file1 <<<<<<< file1 lines 7-8 of file1 ======= lines 7-8 of file3 >>>>>>> file3 rest of file1 The -E option is used by RCS merge(1) to insure that overlapping changes in the merged files are preserved and brought to someone's atten- tion. FILES
/tmp/d3????? /usr/libexec/diff3 SEE ALSO
diff(1) BUGS
Text lines that consist of a single `.' will defeat -e. 7th Edition October 21, 1996 DIFF3(1)

Check Out this Related Man Page

diff3(1)							   User Commands							  diff3(1)

NAME
diff3 - 3-way differential file comparison SYNOPSIS
diff3 [-exEX3] filename1 filename2 filename3 DESCRIPTION
diff3 compares three versions of a file. It publishes disagreeing ranges of text flagged with the following codes: ==== all three files differ ====1 filename1is different ====2 filename2is different ====3 filename3is different The type of change suffered in converting a given range of a given file to some other is indicated in one of the following ways: f : n1 a Text is to be appended after line number n1 in file f, where f = 1, 2, or 3. f : n1 , n2 c Text is to be changed in the range line n1 to line n2. If n1 = n2, the range can be abbreviated to n1. The original contents of the range follows immediately after a c indication. When the contents of two files are identical, the contents of the lower-numbered file is suppressed. The following command applies the resulting script to filename1. (cat script; echo a'1,$pa') | ed - filename1 OPTIONS
The following options are supported: -e Produce a script for the ed(1) editor that incorporates into filename1 all changes between filename2 and filename3 (that is, the changes that normally would be flagged ==== and ====3). Text lines that consist of a single dot (. defeat the -e option. -E Produce a script that incorporates all changes between filename2 and filename3, but treat overlapping changes (that is, changes that would be flagged with ==== in the normal listing) differently. The overlapping lines from both files are inserted by the edit script, bracketed by <<<<<< and >>>>>> lines. -x Produce a script to incorporate only changes flagged ====. -X Produce a script that incorporates only changes flagged ====, but treat these changes in the manner of the -E option. -3 Produce a script to incorporate only changes flagged ====3. USAGE
See largefile(5) for the description of the behavior of diff3 when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). FILES
/tmp/d3* /usr/lib/diff3prog EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error occurred. A difference was found or there was a fatal error. >1 A fatal error occurred. Return values do not work the same as diff(1) or other vendor's versions of diff3. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesc | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
diff(1), attributes(5), largefile(5) NOTES
Files longer than 64 Kbytes do not work. SunOS 5.11 7 Nov 2005 diff3(1)

Featured Tech Videos