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YP(8) OpenBSD System Manager's Manual YP(8)
yp - description of the YP subsystem
ypinit [-m] domain
ypinit [-s] server domain
ypset [-h host] [-d domain] server
yppoll [-h host] [-d domain] mapname
ypcat [-kt] [-d domainname] mapname
ypmatch [-kt] [-d domainname] key ... mapname
ypwhich [-d domain] [[-t] -m [mname] | host]
ypserv [-a aclfile] [-d] [-x]
ypxfr [-bcf] [-d domain] [-h host] [-s domain] [-C tid prog ipadd port]
yppush [-d domainname] [-h hostname] [-v] mapname
The YP subsystem allows network management of passwd, group, and hosts
file entries through the functions getpwent(3), getgrent(3) and gethost-
byname(3) (as well as number of other databases and functions). YP also
provides hooks for numerous other client programs such as amd(8) and
bootparamd(8) to access distributed and shareable versions of their maps
ypinit is used to initialize YP as a server or master. This creates var-
ious files in /var/yp. If setup as a server, the required databases are
automatically copied from the specified server.
The YP client subsystem is started automatically in /etc/rc if the direc-
tory /var/yp/binding exists. The client subsystem can be turned on and
off by creating or deleting that directory. ypbind(8) will create that
directory if run by hand.
The YP server subsystem is started automatically in /etc/rc if the direc-
tory /var/yp/DOMAINNAME exists. This directory is automatically created
by ypinit(8) (which initializes the machine as a YP server.)
If ypbind cannot find a server, the system behaves the same way as Sun's
code does: it hangs.
domainname(1), group(5), passwd(5), ypbind(8), ypcat(1), yppoll(8),
ypmatch(1), ypset(8), ypwhich(1), ypclnt(3), ypserv(8), ypinit(8),
yppush(8), ypxfr(8), rpc.yppasswdd(8)
This free YP subsystem is thought to be compatible with Sun's implementa-
tion. The name YP stands for Yellow Pee.
The ypbind, library components, and userland programs were implemented by
Theo de Raadt <email@example.com>. The server component was implemented
by Mats O Jansson <firstname.lastname@example.org>.
OpenBSD 2.3 April 5, 1993 2
Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.
(Corrections, notes, and links courtesy of RocketAware.com)
OpenBSD sources for yp(8)
Up to: Host, service name, and address operations - Methods and functions for doing address, host, user, and service name lookups (DNS). also Internet Assigned Numbers
RocketLink!--> Man page versions:
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