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 lines unique	to FILE1

     -2	  suppress lines unique	to FILE2

     -3	  suppress 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'.

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/>

COPYRIGHT
     Copyright c 2009 Free  Software  Foundation,  Inc.	  License
     GPLv3+:	  GNU	   GPL	   version     3     or	    later
     <http://gnu.org/licenses/gpl.html>.



GNU coreutils 7.4     Last change: May 2009			1






User Commands						  COMM(1)



     This is free software: you	are free to change and	redistri-
     bute  it.	 There is NO WARRANTY, to the extent permitted by
     law.

SEE ALSO
     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.











































GNU coreutils 7.4     Last change: May 2009			2