comm − compare two sorted files line by line
comm [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.
|
−1 |
suppress column 1 (lines unique to FILE1) | ||
|
−2 |
suppress column 2 (lines unique to FILE2) | ||
|
−3 |
suppress column 3 (lines that appear in both files) |
−−check−order
check that the input is correctly sorted, even if all input lines are pairable
−−nocheck−order
do not check that the input is correctly sorted
−−output−delimiter=STR
separate columns with STR
|
−−help |
display this help and exit |
−−version
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.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report comm translation bugs to <http://translationproject.org/team/>
Written by Richard M. Stallman and David MacKenzie.
Copyright
© 2013 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.
join(1), uniq(1)
The full documentation for comm is maintained as a Texinfo manual. If the info and comm programs are properly installed at your site, the command
info coreutils 'comm invocation'
should give you access to the complete manual.