host name data base
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
For each host a single line should be present with the following information:
official host name
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
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
routine from the Internet address manipulation library,
Host names may contain any printable character other than a field delimiter,
newline, or comment character.
hosts file resides in
Name Server Operations Guide for
file format appeared in