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Full Discussion: Host file and domain name
Top Forums UNIX for Dummies Questions & Answers Host file and domain name Post 12581 by rwb1959 on Thursday 3rd of January 2002 03:24:12 PM
Old 01-03-2002
Hi Nick,

It appears you are trying to set up a Sun
box as a Domain Name Server (if I read you
correctly). First, I'm not sure what you mean
by "compiling" the hosts file since that is
just a text file used to map hostnames and IP
addresses. An error message from "make" would
not be suprising since the "hosts" file is not
a makefile.

DNS however is much more complex
than that. I would recommend you pick up a
book called "DNS and BIND", O'Reilly Publishing,
ISBN: 1-56592-512-2

It's a great book and I'm sure it will help you.

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HOSTS(5)						     Linux Programmer's Manual							  HOSTS(5)

hosts - The static table lookup for hostnames SYNOPSIS
/etc/hosts DESCRIPTION
This manual page describes the format of the /etc/hosts file. This file is a simple text file that associates IP addresses with hostnames, one line per IP address. For each host a single line should be present with the following information: IP_address canonical_hostname [aliases...] Fields of the entry are separated by any number of blanks and/or tab characters. Text from a "#" character until the end of the line is a comment, and is ignored. Host names may contain only alphanumeric characters, minus signs ("-"), and periods ("."). They must begin with an alphabetic character and end with an alphanumeric character. Optional aliases provide for name changes, alternate spellings, shorter hostnames, or generic hostnames (for example, localhost). The Berkeley Internet Name Domain (BIND) Server implements the Internet name server for Unix systems. It augments or replaces the /etc/hosts file or hostname lookup, and frees a host from relying on /etc/hosts being up to date and complete. In modern systems, even though the host table has been superseded by DNS, it is still widely used for: bootstrapping Most systems have a small host table containing the name and address information for important hosts on the local network. This is useful when DNS is not running, for example during system bootup. NIS Sites that use NIS use the host table as input to the NIS host database. Even though NIS can be used with DNS, most NIS sites still use the host table with an entry for all local hosts as a backup. isolated nodes Very small sites that are isolated from the network use the host table instead of DNS. If the local information rarely changes, and the network is not connected to the Internet, DNS offers little advantage. FILES
/etc/hosts NOTES
Modifications to this file normally take effect immediately, except in cases where the file is cached by applications. Historical Notes RFC 952 gave the original format for the host table, though it has since changed. Before the advent of DNS, the host table was the only way of resolving hostnames on the fledgling Internet. Indeed, this file could be created from the official host data base maintained at the Network Information Control Center (NIC), though local changes were often required to bring it up to date regarding unofficial aliases and/or unknown hosts. The NIC no longer maintains the hosts.txt files, though looking around at the time of writing (circa 2000), there are historical hosts.txt files on the WWW. I just found three, from 92, 94, and 95. EXAMPLE localhost foo.mydomain.org foo bar.mydomain.org bar master.debian.org master www.opensource.org SEE ALSO
hostname(1), resolver(3), resolver(5), hostname(7), named(8), Internet RFC 952 COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2002-06-16 HOSTS(5)

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