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Operating Systems AIX Use of /etc/hosts files in resolving the dns name Post 302918583 by gull04 on Wednesday 24th of September 2014 09:57:43 AM
Old 09-24-2014
Hi,

The /etc/hosts file is local only to the server that it is on - other servers don't actually know about it.

It is used to allow the local server to identify other hosts on a network, it has generally fallen out of favour where there are comprehensive DNS services etc.

Regards

Dave
 
Test Your Knowledge in Computers #489
Difficulty: Medium
Because interpreted languages are not compiled, syntax errors do not become runtime errors.
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HOSTS(5)						      BSD File Formats Manual							  HOSTS(5)

NAME
hosts -- host name data base DESCRIPTION
The hosts file contains information regarding the known hosts on the network. It can be used in conjunction with DNS, and the NIS maps `hosts.byaddr' and `hosts.byname', as controlled by nsswitch.conf(5). For each host a single line should be present with the following information: Internet address official host name aliases Items are separated by any number of blanks and/or tab characters. A ``#'' indicates the beginning of a comment; characters up to the end of the line are not interpreted by routines which search the file. This file provides a backup used when the name server is not running. For the name server, it is suggested that only a few addresses be included in this file. These include addresses for the local interfaces that ifconfig(8) needs at boot time and a few machines on the local network. This file may be created from the official host data base maintained at the Network Information Control Center (NIC), though local changes may be required to bring it up to date regarding unofficial aliases and/or unknown hosts. As the data base maintained at NIC is incomplete, use of the name server is recommended for sites on the DARPA Internet. Network addresses are specified in the conventional ``.'' (dot) notation using the inet_addr(3) routine from the Internet address manipula- tion library, inet(3). Host names may contain any printable character other than a field delimiter, newline, or comment character. FILES
/etc/hosts The hosts file resides in /etc. SEE ALSO
gethostbyname(3), nsswitch.conf(5), ifconfig(8) Name Server Operations Guide for BIND. HISTORY
The hosts file format appeared in 4.2BSD. BSD
December 25, 2013 BSD

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