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Linux 2.6 - man page for networks (linux section 5)

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NETWORKS(5)			   Linux System Administration			      NETWORKS(5)

NAME
       networks - network name information

DESCRIPTION
       The  file /etc/networks is a plain ASCII file that describes known DARPA networks and sym-
       bolic names for these networks.	Each line represents a	network  and  has  the	following
       structure:

	      name number aliases ...

       where  the  fields  are	delimited  by spaces or tabs.  Empty lines are ignored.  The hash
       character (#) indicates the start of a comment: this character, and the remaining  charac-
       ters  up to the end of the current line, are ignored by library functions that process the
       file.

       The field descriptions are:

       name   The symbolic name for the network.  Network names can contain any printable charac-
	      ters execept white-space characters or the comment character.

       number The  official  number  for this network in numbers-and-dots notation (see inet(3)).
	      The trailing ".0" (for the host component of the network address) may be omitted.

       aliases
	      Optional aliases for the network.

       This file is read by the route(8) and netstat(8) utilities.  Only Class A, B or C networks
       are  supported, partitioned networks (i.e., network/26 or network/28) are not supported by
       this facility.

FILES
       /etc/networks
	      The networks definition file.

SEE ALSO
       getnetbyaddr(3), getnetbyname(3), getnetent(3), netstat(8), route(8)

COLOPHON
       This page is part of release 3.55 of the Linux man-pages project.  A  description  of  the
       project,     and    information	  about    reporting	bugs,	 can	be    found    at
       http://www.kernel.org/doc/man-pages/.

GNU/Linux				    2008-09-04				      NETWORKS(5)
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