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COMM(1)				 User Commands			       COMM(1)


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 lines unique to FILE1 -2 suppress lines unique to FILE2 -3 suppress lines that appear in both files --help display this help and exit --version output version information and exit


Written by Richard Stallman and David MacKenzie.


Report bugs to <>.


Copyright (C) 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <>. There is NO WARRANTY, to the extent permitted by law.


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 comm should give you access to the complete manual. comm 5.97 March 2012 COMM(1)

1994 Man-cgi 1.15, Panagiotis Christias <>