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comm

compare two sorted files line by line


  1. comm.1.man


1. comm.1.man

Manpage of COMM

COMM

Section: User Commands (1)
Updated: October 2011
Index Return to Main Contents
 

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

Report comm bugs to bug-coreutils@gnu.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

Copyright © 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl>.
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)

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 aqcomm invocationaq

should give you access to the complete manual.


 

Index

NAME
SYNOPSIS
DESCRIPTION
EXAMPLES
AUTHOR
REPORTING BUGS
COPYRIGHT
SEE ALSO

This document was created by man2html using the manual pages.
Time: 17:30:33 GMT, October 23, 2013

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