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hosts(5)                    BSD File Formats Manual                   hosts(5)


     hosts -- host name data base


     The hosts file contains information regarding the known hosts on the net-
     work.  For each host a single line should be present with the following

           Internet address
           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.

     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 delim-
     iter, newline, or comment character.

     The hosts file is read by mDNSResponder(8) and used to supply results for
     calls to getaddrinfo(3), getnameinfo(3), etc. in addition to results
     obtained from multicast and unicast DNS.




     gethostent(3), getipnodebyname(3), getaddrinfo(3), getnameinfo(3)

     RFC1924: A Compact Representation of IPv6 Addresses.


     The hosts file format appeared in 4.2BSD.

4.2 Berkeley Distribution      December 11, 1993     4.2 Berkeley Distribution

Mac OS X 10.8 - Generated Sat Sep 1 12:45:13 CDT 2012
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