networks(4)                                                     networks(4)




 NAME    [Toc]    [Back]
      networks - network name data base

 DESCRIPTION    [Toc]    [Back]
      The /etc/networks file associates Internet (IP) addresses with
      official network names and aliases.  This allows the user to refer to
      a network by a symbolic name instead of using an Internet address.
      For each network, a single line should be present with the following
      information:

           <official network name>   <network number>   <aliases>

      Aliases are other names under which a network is known.  For example:

           loop  192.46.4  testlan

      where the network named loop is also called testlan.

      A line cannot start with a blank (tab or space character).  Items are
      separated by any number or combination of blanks.  A # character
      indicates the beginning of a comment.  Characters from the # up to the
      end of the line are not interpreted by routines which search the file.
      Trailing blanks are allowed at the end of a line.  For the Internet,
      this file is normally created from the official network database
      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 networks.

      Network numbers can be specified in conventional Internet dot notation
      using the inet_network() routine from the internet address
      manipulation library (see inet(3N).  Network names can contain any
      printable character other than a white space, new-line, or comment
      character.

 EXAMPLES    [Toc]    [Back]
      See /etc/networks.

 AUTHOR    [Toc]    [Back]
      networks was developed by the University of California, Berkeley.

 FILES    [Toc]    [Back]
      /etc/networks

 SEE ALSO    [Toc]    [Back]
      getnetent(3N).


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