# 2.11BSD#431 - /usr/man/cat8/htable.0

    HTABLE(8)	    UNIX Programmer's Manual		HTABLE(8)

    NAME
         htable - convert NIC standard format host tables

    SYNOPSIS
         /etc/htable [ -c connected-nets ] [ -l local-nets ] file

    DESCRIPTION
         Htable is used to convert host files in the format specified
         in Internet RFC 810 to the format used by the network
         library routines.	Three files are created as a result of
         running htable: hosts, networks, and gateways.  The hosts
         file may be used by the gethostbyname(3N) routines in map-
         ping host names to addresses if the nameserver, named(8), is
         not used.	The networks file is used by the getnetent(3N)
         routines in mapping network names to numbers.  The gateways
         file may be used by the routing daemon in identifying ``pas-
         sive'' Internet gateways; see routed(8C) for an explanation.

         If any of the files localhosts, localnetworks, or localgate-
         ways are present in the current directory, the file's con-
         tents is prepended to the output file.  Of these, only the
         gateways file is interpreted.  This allows sites to maintain
         local aliases and entries which are not normally present in
         the master database.  Only one gateway to each network will
         be placed in the gateways file; a gateway listed in the
         localgateways file will override any in the input file.

         If the gateways file is to be used, a list of networks to
         which the host is directly connected is specified with the
         -c flag.  The networks, separated by commas, may be given by
         name or in Internet-standard dot notation, e.g.  -c
         arpanet,128.32,local-ether-net.  Htable only includes gate-
         ways which are directly connected to one of the networks
         specified, or which can be reached from another gateway on a
         connected net.

         If the -l option is given with a list of networks (in the
         same format as for -c), these networks will be treated as
         ``local,'' and information about hosts on local networks is
         taken only from the localhosts file.  Entries for local
         hosts from the main database will be omitted.  This allows
         the localhosts file to completely override any entries in
         the input file.

         Htable is best used in conjunction with the gettable(8C)
         program which retrieves the NIC database from a host.

    SEE ALSO
         intro(3N), gettable(8C), named(8)

    BUGS
         If the name-domain system provided network name mapping well

    Printed 11/26/99	  May 22, 1986				1

    HTABLE(8)	    UNIX Programmer's Manual		HTABLE(8)

         as host name mapping, htable would no longer be needed.

    Printed 11/26/99	  May 22, 1986				2

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