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90 lines
3.2 KiB
Groff
90 lines
3.2 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)networks.5 8.1 (Berkeley) 6/5/93
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.\" $FreeBSD$
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.\"
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.Dd June 5, 1993
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.Dt NETWORKS 5
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.Os BSD 4.2
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.Sh NAME
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.Nm networks
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.Nd network name data base
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.Sh DESCRIPTION
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The
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.Nm networks
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file contains information regarding
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the known networks which comprise the
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.Tn DARPA
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Internet.
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For each network a single line should be present with the following information:
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.Bd -unfilled -offset indent
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official network name
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network number
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aliases
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.Ed
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.Pp
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Items are separated by any number of blanks and/or tab characters.
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A ``#'' indicates the beginning of a comment; characters up to the end of
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the line are not interpreted by routines which search the file.
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This file is normally created from the official network data base
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maintained at the Network Information Control Center
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.Pq Tn NIC ,
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though local
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changes may be required to bring it up to date regarding unofficial aliases
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and/or unknown networks.
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.Pp
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Network numbers may be specified in the conventional
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``.'' (dot) notation using the
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.Xr inet_network 3
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routine
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from the Internet address manipulation library,
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.Xr inet 3 .
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Network names may contain any printable character other than a field
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delimiter, newline, or comment character.
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.Sh FILES
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.Bl -tag -width /etc/networks -compact
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.It Pa /etc/networks
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The
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.Nm networks
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file resides in
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.Pa /etc .
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.El
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.Sh SEE ALSO
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.Xr getnetent 3
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.Sh BUGS
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A name server should be used instead of a static file.
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.Sh HISTORY
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The
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.Nm
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file format appeared in
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.Bx 4.2 .
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