.\"	$NetBSD: yp.8,v 1.9 1995/08/11 01:16:52 thorpej Exp $
.\"
.\" Copyright (c) 1992, 1993, 1996 Theo de Raadt <deraadt@theos.com>
.\" All rights reserved.
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.Dd April 5, 1993
.Dt YP 8
.Os
.Sh NAME
.Nm yp
.Nd description of the YP subsystem
.Sh SYNOPSIS
.Nm ypinit
.Op Fl m
.Ar domain
.Nm ypinit
.Op Fl s
.Ar server
.Ar domain
.Pp
.Nm ypbind
.Op Fl ypset
.Nm ypbind
.Op Fl ypsetme
.Pp
.Nm ypset
.Op Fl h Ar host
.Op Fl d Ar domain
.Ar server
.Pp
.Nm yppoll
.Op Fl h Ar host
.Op Fl d Ar domain
.Ar mapname
.Pp
.Nm ypcat
.Op Fl kt
.Op Fl d Ar domainname
.Ar mapname
.Nm ypcat
.Fl x
.Pp
.Nm ypmatch
.Op Fl kt
.Op Fl d Ar domainname
.Ar key ... mapname
.Nm ypmatch
.Fl x
.Pp
.Nm ypwhich
.Op Fl d Ar domain
.Oo
.Op Fl t
.Fl m Op Ar mname
|
.Ar host
.Oc
.Nm ypwhich
.Fl x
.Pp
.Nm ypserv
.Op Fl a Ar aclfile
.Op Fl d
.Op Fl x
.Pp
.Nm ypxfr
.Op Fl bcf
.Op Fl d Ar domain
.Op Fl h Ar host
.Op Fl s Ar domain
.Op Fl C Ar tid prog ipadd port
.Ar mapname
.Pp
.Nm yppush
.Op Fl d Ar domainname
.Op Fl h Ar hostname
.\" .Op Fl p Ar paralleljobs
.\" .Op Fl t Ar timeout
.Op Fl v
.Ar mapname
.Sh DESCRIPTION
The
.Nm YP
subsystem allows network management of passwd, group, and
hosts file entries through the functions
.Xr getpwent 3 ,
.Xr getgrent 3
and
.Xr gethostbyname 3
(as well as number of other databases and functions).
.Nm YP
also provides hooks for numerous other client programs
such as
.Xr amd 8
and
.Xr bootparamd 8
to access distributed and shareable versions
of their maps through
.Nm YP .
.Pp
.Nm ypinit
is used to initialize YP as a server or master.  This creates
various files in
.Pa /var/yp .
If setup as a server, the required databases are automatically copied
from the specified server.
.Pp
The
.Nm YP
client subsystem is started automatically in
.Pa /etc/rc
if the directory
.Pa /var/yp/binding
exists.
The client subsystem can be turned on and off by creating or
deleting that directory.
.Xr ypbind 8
will create that directory if run by hand.
.Pp
The
.Nm YP
server subsystem is started automatically in
.Pa /etc/rc
if the directory
.Pa /var/yp/DOMAINNAME
exists.
This directory is automatically created by
.Xr ypinit 8
(which initializes the machine as a
.Nm YP
server.)
.Pp
If
.Nm ypbind
cannot find a server, the system behaves the same way as Sun's code
does: it hangs.
.Sh SEE ALSO
.Xr domainname 1 ,
.Xr group 5 ,
.Xr passwd 5 ,
.Xr ypbind 8 ,
.Xr ypcat 1 ,
.Xr yppoll 8 ,
.Xr ypmatch 1 ,
.Xr ypset 8 ,
.Xr ypwhich 1 ,
.Xr ypclnt 3 ,
.Xr ypserv 8 ,
.Xr ypinit 8 ,
.Xr yppush 8 ,
.Xr ypxfr 8 ,
.Xr rpc.yppasswdd 8
.Sh HISTORY
This free
.Nm YP
subsystem is thought to be compatible with Sun's implementation.
.Pp
The ypbind, library components, and userland programs were implemented
by Theo de Raadt <deraadt@theos.com>.
The server component was implemented by Mats O Jansson <moj@stacken.kth.se>.