Section: User Commands (1)
Updated: April 2010
Return to Main Contents
comm - compare two sorted files line by line
[OPTION]... FILE1 FILE2
Compare sorted files FILE1 and FILE2 line by line.
With no options, produce three-column output. Column one contains
lines unique to FILE1, column two contains lines unique to FILE2,
and column three contains lines common to both files.
suppress column 1 (lines unique to FILE1)
suppress column 2 (lines unique to FILE2)
suppress column 3 (lines that appear in both files)
check that the input is correctly sorted, even
if all input lines are pairable
do not check that the input is correctly sorted
separate columns with STR
display this help and exit
output version information and exit
Note, comparisons honor the rules specified by `LC_COLLATE'.
- comm -12 file1 file2
Print only lines present in both file1 and file2.
- comm -3
file1 file2 Print lines in file1 not in file2, and vice versa.
Written by Richard M. Stallman and David MacKenzie.
Report comm bugs to firstname.lastname@example.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report comm translation bugs to <http://translationproject.org/team/>
Copyright © 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://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.
The full documentation for
is maintained as a Texinfo manual. If the
programs are properly installed at your site, the command
info coreutils 'comm invocation'
should give you access to the complete manual.
- REPORTING BUGS
- SEE ALSO
This document was created by
using the manual pages.