COMM(1) - phpMan

COMM(1) User Commands COMM(1)

NAME
comm - compare two sorted files line by line

SYNOPSIS
comm [OPTION]... FILE1 FILE2

DESCRIPTION
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'.

EXAMPLES
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 transla-
tion bugs to <http://translationproject.org/team/>

AUTHOR
Written by Richard M. Stallman and David MacKenzie.

COPYRIGHT
Copyright (C) 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.