151 lines
4.5 KiB
Groff
151 lines
4.5 KiB
Groff
.\" Copyright (c) 1983, 1991 The Regents of the University of California.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" 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: @(#)htable.8 6.6 (Berkeley) 3/16/91
|
|
.\" $Id: htable.8,v 1.2 1993/08/01 07:25:00 mycroft Exp $
|
|
.\"
|
|
.Dd March 16, 1991
|
|
.Dt HTABLE 8
|
|
.Os BSD 4.2
|
|
.Sh NAME
|
|
.Nm htable
|
|
.Nd convert
|
|
.Tn NIC
|
|
standard format host tables
|
|
.Sh SYNOPSIS
|
|
.Nm htable
|
|
.Op Fl c Ar connected-nets
|
|
.Op Fl l Ar local-nets
|
|
.Ar file
|
|
.Sh DESCRIPTION
|
|
.Nm Htable
|
|
is used to convert host files in the format specified
|
|
in Internet
|
|
.Tn RFC
|
|
810 to the format used by the network
|
|
library routines. Three files are created as a result
|
|
of running
|
|
.Nm htable :
|
|
.Pa hosts ,
|
|
.Pa networks ,
|
|
and
|
|
.Pa gateways .
|
|
The
|
|
.Xr hosts
|
|
file may be used by the
|
|
.Xr gethostbyname 3
|
|
routines in mapping host names to addresses
|
|
if the nameserver,
|
|
.Xr named 8 ,
|
|
is not used.
|
|
The
|
|
.Pa networks
|
|
file is used by the
|
|
.Xr getnetent 3
|
|
routines in mapping network names to numbers.
|
|
The
|
|
.Pa gateways
|
|
file may be used by the routing daemon
|
|
in identifying
|
|
.Dq passive
|
|
Internet gateways;
|
|
see
|
|
.Xr routed 8
|
|
for an explanation.
|
|
.Pp
|
|
Options available for
|
|
.Nm htable :
|
|
.Bl -tag -width Ds
|
|
.It Fl c Ar connected-nets
|
|
If the gateways file is to be used,
|
|
.Ar connected-nets
|
|
is a list of networks to which the host is directly connected.
|
|
The networks, separated by commas,
|
|
may be given by name or in Internet-standard dot notation,
|
|
for example:
|
|
.Bd -literal -offset indent
|
|
\-c arpanet,128.32,local-ether-net.
|
|
.Ed
|
|
.Pp
|
|
.Nm Htable
|
|
only includes gateways
|
|
which are directly connected to one of the networks specified,
|
|
or which can be reached from another gateway on a connected net.
|
|
.It Fl l Ar local-nets
|
|
If the
|
|
.Fl l
|
|
option is given with a list of networks (in the same format as for
|
|
.Fl c ) ,
|
|
these networks will be treated as ``local,''
|
|
and information about hosts on local networks is
|
|
taken only from the localhosts file.
|
|
Entries for local hosts from the main database will be omitted.
|
|
This allows the localhosts file to completely override
|
|
any entries in the input file.
|
|
.El
|
|
.Pp
|
|
If any of the files
|
|
.Pa localhosts ,
|
|
.Pa localnetworks ,
|
|
or
|
|
.Pa localgateways
|
|
are present in the current directory,
|
|
the file's contents is prepended to the
|
|
output file.
|
|
Of these, only the gateways file is interpreted.
|
|
This allows sites to maintain local aliases and
|
|
entries which are not normally present in the
|
|
master database.
|
|
Only one gateway to each network will be placed in the gateways file;
|
|
a gateway listed in the localgateways file will override any in the
|
|
input file.
|
|
.Pp
|
|
.Nm Htable
|
|
is best used in conjunction with the
|
|
.Xr gettable 8
|
|
program which retrieves the
|
|
.Tn NIC
|
|
database from a host.
|
|
.Sh SEE ALSO
|
|
.Xr netintro 4 ,
|
|
.Xr gettable 8 ,
|
|
.Xr named 8
|
|
.Sh BUGS
|
|
If the name-domain system provided network name mapping well as host
|
|
name mapping,
|
|
.Nm htable
|
|
would no longer be needed.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.2 .
|