Codex

COMM

Section: User Commands (1)

Updated: March 2015

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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.:

AUTHOR

Written by Richard M. Stallman and David MacKenzie.

REPORTING BUGS

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>

Report comm translation bugs to <http://translationproject.org/team/>

COPYRIGHT

Copyright © 2014 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.

SEE ALSO

join?(1), uniq?(1)

Full documentation at: <http://www.gnu.org/software/coreutils/comm>

or available locally via: info '(coreutils) comm invocation'


Index

NAME

SYNOPSIS

DESCRIPTION

EXAMPLES

AUTHOR

REPORTING BUGS

COPYRIGHT

SEE ALSO


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