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comm(1)				 User Commands			       comm(1)

NAME
       comm - select or	reject lines common to two files

SYNOPSIS
       comm [-123] file1 file2

DESCRIPTION
       The  comm  utility  reads file1 and file2, which	must be	ordered	in the
       current collating sequence, and produces	three text columns as  output:
       lines only in file1; lines only in file2; and lines in both files.

       If  the input files were	ordered	according to the collating sequence of
       the current locale, the lines written will be in	the collating sequence
       of the original lines. If not, the results are unspecified.

OPTIONS
       The following options are supported:

       -1	Suppresses the output column of	lines unique to	file1.

       -2	Suppresses the output column of	lines unique to	file2.

       -3	Suppresses  the	output column of lines duplicated in file1 and
		file2.

OPERANDS
       The following operands are supported:

       file1	A path name of the first file to be compared. If file1	is  -,
		the standard input is used.

       file2	A  path	name of	the second file	to be compared.	If file2 is -,
		the standard input is used.

USAGE
       See largefile(5)	for the	description of the behavior of comm  when  en-
       countering files	greater	than or	equal to 2 Gbyte ( 2**31 bytes).

EXAMPLES
       Example 1: Printing a list of utilities specified by files

       If file1, file2,	and file3 each contain a sorted	list of	utilities, the
       command

       example%	comm -23 file1 file2  |	comm -23 - file3

       prints a	list of	utilities in file1 not	specified  by  either  of  the
       other files. The	entry:

       example%	comm -12 file1 file2 | comm -12	- file3

       prints a	list of	utilities specified by all three files.	And the	entry:

       example%	comm -12  file2	file3 |	comm -23 -file1

       prints  a  list of utilities specified by both file2 and	file3, but not
       specified in file1.

ENVIRONMENT VARIABLES
       See environ(5) for descriptions of the following	environment  variables
       that  affect the	execution of comm: LANG, LC_ALL, LC_COLLATE, LC_CTYPE,
       LC_MESSAGES, and	NLSPATH.

EXIT STATUS
       The following exit values are returned:

       0	All input files	were successfully output as specified.

       >0	An error occurred.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE	TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |enabled			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       cmp(1), diff(1),	sort(1), uniq(1),  attributes(5),  environ(5),	large-
       file(5),	standards(5)

SunOS 5.10			  3 Mar	2004			       comm(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OPERANDS | USAGE | EXAMPLES | ENVIRONMENT VARIABLES | EXIT STATUS | ATTRIBUTES | SEE ALSO

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<https://www.freebsd.org/cgi/man.cgi?query=comm&sektion=1&manpath=SunOS+5.10>

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