|HOSTS(5)||File Formats Manual||HOSTS(5)|
hosts — host name
hosts file contains information
regarding the known hosts on the network. 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.
Network addresses may either be specified for IP version 4 or version 6. IP version 4 addresses are specified in the conventional dotted address notation. IP version 6 addresses are specified using the colon-separated notation described in RFC1924.
Host names may contain any printable character other than a field delimiter, newline, or comment character.
RFC1924: A Compact Representation of IPv6 Addresses.
hosts file format appeared in
|December 11, 1993||BSD 4.2|