[unix-history] / man / man1 / comm.1

.th COMM I 8/21/73
.sh NAME
comm \*- print lines common to two files
.sh SYNOPSIS
.bd comm
[
.bd \*-
[
.bd 123
]
] file1 file2
[
file3
]
.sh DESCRIPTION
.it Comm
reads
.it file1
and
.it file2,
which should be in sort,
and produces a three column output: lines only in
.it file1;
lines only in
.it file2;
and lines in both files.
.s3
If
.it file3
is given, the output will be placed there;
otherwise it will be written on the standard output.
.s3
Flags 1, 2, or 3 suppress printing of the corresponding
column.
Thus
.bd comm
.bd \*-12
prints only the lines common to the two files;
.bd comm
.bd \*-23
prints only lines in the first file but not in the second;
.bd comm
.bd \*-123
is a no-op.
.s3
.sh "SEE ALSO"
uniq(\|I\|), proof(\|I\|), cmp(\|I\|)
.sh BUGS
Commit	Line	Data
789fc9f9 KT	1	.th COMM I 8/21/73
	2	.sh NAME
	3	comm \*- print lines common to two files
	4	.sh SYNOPSIS
	5	.bd comm
	6	[
	7	.bd \*-
	8	[
	9	.bd 123
	10	]
	11	] file1 file2
	12	[
	13	file3
	14	]
	15	.sh DESCRIPTION
	16	.it Comm
	17	reads
	18	.it file1
	19	and
	20	.it file2,
	21	which should be in sort,
	22	and produces a three column output: lines only in
	23	.it file1;
	24	lines only in
	25	.it file2;
	26	and lines in both files.
	27	.s3
	28	If
	29	.it file3
	30	is given, the output will be placed there;
	31	otherwise it will be written on the standard output.
	32	.s3
	33	Flags 1, 2, or 3 suppress printing of the corresponding
	34	column.
	35	Thus
	36	.bd comm
	37	.bd \*-12
	38	prints only the lines common to the two files;
	39	.bd comm
	40	.bd \*-23
	41	prints only lines in the first file but not in the second;
	42	.bd comm
	43	.bd \*-123
	44	is a no-op.
	45	.s3
	46	.sh "SEE ALSO"
	47	uniq(\\|I\\|), proof(\\|I\\|), cmp(\\|I\\|)
	48	.sh BUGS