1 .\" $NetBSD: comm.1,v 1.10 2003/08/07 11:13:27 agc Exp $
3 .\" Copyright (c) 1989, 1990, 1993
4 .\" The Regents of the University of California. All rights reserved.
6 .\" This code is derived from software contributed to Berkeley by
7 .\" the Institute of Electrical and Electronics Engineers, Inc.
9 .\" Redistribution and use in source and binary forms, with or without
10 .\" modification, are permitted provided that the following conditions
12 .\" 1. Redistributions of source code must retain the above copyright
13 .\" notice, this list of conditions and the following disclaimer.
14 .\" 2. Redistributions in binary form must reproduce the above copyright
15 .\" notice, this list of conditions and the following disclaimer in the
16 .\" documentation and/or other materials provided with the distribution.
17 .\" 3. Neither the name of the University nor the names of its contributors
18 .\" may be used to endorse or promote products derived from this software
19 .\" without specific prior written permission.
21 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 .\" @(#)comm.1 8.1 (Berkeley) 6/6/93
40 .Nd select or reject lines common to two files
53 sorted lexically, and produces three text
54 columns as output: lines only in
58 and lines in both files.
60 The filename ``-'' means the standard input.
62 The following options are available:
65 Suppress printing of column 1.
67 Suppress printing of column 2.
69 Suppress printing of column 3.
71 Fold case in line comparisons.
74 Each column will have a number of tab characters prepended to it
75 equal to the number of lower numbered columns that are being printed.
76 For example, if column number two is being suppressed, lines printed
77 in column number one will not have any tabs preceding them, and lines
78 printed in column number three will have one.
81 assumes that the files are lexically sorted; all characters
82 participate in line comparisons.
84 .\" .Bl -tag -width indent
89 .\" .It Ev LC_MESSAGES
93 exits 0 on success, \*[Gt]0 if an error occurred.