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GDOMAP(8)		     GNUstep System Manual		     GDOMAP(8)

       gdomap -	GNUstep	Distributed Objects name server

       gdomap  [-C|-H]	[-I  pidfile] [-L name]	[-M name] [-N] [-P number] [-R
       name] [-S] [-T type] [-U	name] [-a file]	[-c file] [-d] [-f]  [-i  sec-
       onds] [-j path] [-p]

       gdomap  The  gdomap  daemon is used by GNUstep programs to look up dis-
       tributed	objects	of processes running across the	network	 (and  between
       different  user	accounts on a single machine).	The daemon is NOT used
       for lookup where	two processes belonging	to the same user are  using  a
       host-local  connection.	This manual page explains the usage of gdomap.
       For design and implementation information (and special notes for	 pack-
       agers),	please	see  the HTML documentation installed in $GNUSTEP_SYS-
       TEM_DOC,	under Command-line Tools.

       Usually the gdomap daemon is started at system boot time	and binds  it-
       self  to	 port  538.  See  the GNUstep Build Guide for a	sample startup

       By default gdomap probes	every machine on the local network to  see  if
       there is	a copy of gdomap running on it.	 This is done for class-C net-
       works and subnets of class-C networks.  If your host is on a class-B or
       class-A	net then the default behaviour is to treat it as a class-C net
       and probe only the hosts	that would be expected on a class-C network of
       the same	number.

       If  you are running on a	class-A	or class-B network, or if your net has
       a large number of hosts which will not have gdomap on them  -  you  may
       want  to	supply a configuration file listing the	hosts to be probed ex-
       plicitly, rather	than getting gdomap to probe all hosts	on  the	 local

       You  may	also want to supply the	configuration file so that hosts which
       are not actually	on your	local network can still	 be  found  when  your
       code  tries to connect to a host	using @"*" as the host name.  NB. this
       functionality does not exist in OpenStep.

       A configuration file consists of	a list of IP addresses to  be  probed.
       The  IP	addresses  should be in	standard 'dot' notation, one per line.
       Empty lines are permitted in the	configuration  file.   Anything	 on  a
       line  after  a hash ('#') is ignored.  You tell gdomap about the	config
       file with the '-c' command line option.

       gdomap uses the SIOCGIFCONF ioctl to build a list of IP	addresses  and
       netmasks	 for the network interface cards on your machine.  On some op-
       erating systems,	this facility is not available (or is broken), so  you
       must  tell  gdomap  the addresses and masks of the interfaces using the
       '-a' command line option.  The file named with '-a'  should  contain  a
       series  of  lines  with space separated pairs of	addresses and masks in
       'dot' notation.	You must NOT include loopback interfaces in this list.
       If  you want to support broadcasting of probe information on a network,
       you may supply the broadcast address as a third item on the  line.   If
       your  operating	system	has  some other	method of giving you a list of
       network interfaces and masks, please send me example code so that I can
       implement it in gdomap.

       -C     help about configuration

       -H     general help

       -I     pid file to write	pid

       -L name
	      perform lookup for name then quit.

       -M name
	      machine name for -L and -N

       -N     list all names registered	on host

       -P number
	      port number required for -R option.

       -R name
	      register name locally then quit.	-S

       -S     list the addresses of all	gdomap servers known to	host

       -T type
	      port  type  for  -L  ,  -R  and  -U  options - tcp_gdo, udp_gdo,
	      tcp_foreign, udp_foreign.

       -U name
	      unregister name locally then quit.

       -a file
	      use config file for interface list.

       -c file
	      use config file for probe.

       -d     extra debug logging (normally via	syslog).

       -f     avoid fork() to make debugging easy

       -i seconds
	      re-probe at this interval	(roughly), min 60

       -j path
	      place the	process	in a chroot jail at this path rather  than  in

       -p     disable probing for other	servers

       Use the -c option to specify a configuration file for gdomap. See under
       DESCRIPTION for possible	configurations.

       Kill  with  SIGUSR1  to	obtain	a  dump	 of   all   known   peers   in

       gdomap -N lists all registered names on the local host.

       gdomap -C gives above instructions on how to set	up gdomap.

       gdnc(1),	GNUstep(7), gpbs(1)

       The  GNUstep  Build  Guide  example  rc	script:	 <http://gnustep.made->

       Work on gdomap started in October 1996.

       This manual page	first appeared in gnustep-base 1.7.1 (June 2003).

       gdomap was written by Richard Frith-Macdonald <>

       This manual page	was put	together by Martin  Brecher  <martin@mb-itcon->.

GNUstep				  August 2003			     GDOMAP(8)


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