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

.TH COMM 1  "18 January 1983"
.SH NAME
comm \- select or reject lines common to two sorted files
.SH SYNOPSIS
.B comm
[
.B \-
[
.B 123
]
] file1 file2
.SH DESCRIPTION
.I Comm
reads
.I file1
and
.I file2,
which should be ordered in ASCII collating sequence,
and produces a three column output: lines only in
.I file1;
lines only in
.I file2;
and lines in both files.
The filename `\-' means the standard input.
.PP
Flags 1, 2, or 3 suppress printing of the corresponding
column.
Thus
.B comm
.B \-12
prints only the lines common to the two files;
.B comm
.B \-23
prints only lines in the first file but not in the second;
.B comm
.B \-123
is a no-op.
.PP
.SH "SEE ALSO"
cmp(1), diff(1), uniq(1)
Commit	Line	Data
cb3f4193 C	1	.TH COMM 1 "18 January 1983"
	2	.SH NAME
	3	comm \- select or reject lines common to two sorted files
	4	.SH SYNOPSIS
	5	.B comm
	6	[
	7	.B \-
	8	[
	9	.B 123
	10	]
	11	] file1 file2
	12	.SH DESCRIPTION
	13	.I Comm
	14	reads
	15	.I file1
	16	and
	17	.I file2,
	18	which should be ordered in ASCII collating sequence,
	19	and produces a three column output: lines only in
	20	.I file1;
	21	lines only in
	22	.I file2;
	23	and lines in both files.
	24	The filename `\-' means the standard input.
	25	.PP
	26	Flags 1, 2, or 3 suppress printing of the corresponding
	27	column.
	28	Thus
	29	.B comm
	30	.B \-12
	31	prints only the lines common to the two files;
	32	.B comm
	33	.B \-23
	34	prints only lines in the first file but not in the second;
	35	.B comm
	36	.B \-123
	37	is a no-op.
	38	.PP
	39	.SH "SEE ALSO"
	40	cmp(1), diff(1), uniq(1)