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author | 2021-05-09 14:20:58 -0400 | |
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committer | 2021-05-09 14:20:58 -0400 | |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /text_cmds/comm/comm.1 | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'text_cmds/comm/comm.1')
-rw-r--r-- | text_cmds/comm/comm.1 | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/text_cmds/comm/comm.1 b/text_cmds/comm/comm.1 new file mode 100644 index 0000000..45a726d --- /dev/null +++ b/text_cmds/comm/comm.1 @@ -0,0 +1,124 @@ +.\" Copyright (c) 1989, 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" From: @(#)comm.1 8.1 (Berkeley) 6/6/93 +.\" $FreeBSD: src/usr.bin/comm/comm.1,v 1.14 2005/01/25 22:28:34 tjr Exp $ +.\" +.Dd January 26, 2005 +.Os +.Dt COMM 1 +.Sh NAME +.Nm comm +.Nd select or reject lines common to two files +.Sh SYNOPSIS +.Nm +.Op Fl 123i +.Ar file1 file2 +.Sh DESCRIPTION +The +.Nm +utility reads +.Ar file1 +and +.Ar file2 , +which should be +sorted lexically, and produces three text +columns as output: lines only in +.Ar file1 ; +lines only in +.Ar file2 ; +and lines in both files. +.Pp +The filename ``-'' means the standard input. +.Pp +The following options are available: +.Bl -tag -width indent +.It Fl 1 +Suppress printing of column 1. +.It Fl 2 +Suppress printing of column 2. +.It Fl 3 +Suppress printing of column 3. +.It Fl i +Case insensitive comparison of lines. +.El +.Pp +Each column will have a number of tab characters prepended to it +equal to the number of lower numbered columns that are being printed. +For example, if column number two is being suppressed, lines printed +in column number one will not have any tabs preceding them, and lines +printed in column number three will have one. +.Pp +The +.Nm +utility assumes that the files are lexically sorted; all characters +participate in line comparisons. +.Sh ENVIRONMENT +The +.Ev LANG , +.Ev LC_ALL , +.Ev LC_COLLATE , +and +.Ev LC_CTYPE +environment variables affect the execution of +.Nm +as described in +.Xr environ 7 . +.Sh EXIT STATUS +.Ex -std +.Sh SEE ALSO +.Xr cmp 1 , +.Xr diff 1 , +.Xr sort 1 , +.Xr uniq 1 +.Sh STANDARDS +The +.Nm +utility conforms to +.St -p1003.2-92 . +.Pp +The +.Fl i +option is an extension to the +.Tn POSIX +standard. +.Sh HISTORY +A +.Nm +command appeared in +.At v4 . +.Sh BUGS +Input lines are limited to +.Dv LINE_MAX +(2048) characters in length. |