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YPINIT(8)               FreeBSD System Manager's Manual              YPINIT(8)

     ypinit -- build and install NIS databases

     ypinit -m [domainname]
     ypinit -s master_server [domainname]
     ypinit -u [domainname]

     The ypinit utility is a script which sets up databases on a Network
     Information Service (NIS) master or slave server.

     On a master server, ypinit creates the /var/yp/$DOMAINNAME directory, the
     /var/yp/ypservers file, and calls /var/yp/Makefile to create and populate
     an initial set of NIS maps.  The maps are created from local source files
     using the yp_mkdb(8) utility.  The utility will prompt the user for a
     list of servers that support the specified domain; this list is used to
     populate the ypservers map.

     On a slave server, ypinit creates the /var/yp/$DOMAINNAME, populates it
     with copies of the NIS maps from the master.  The maps are obtained from
     the master using the ypxfr(8) utility.  The ypinit utility obtains the
     list of maps to transfer in one of two ways: if the system is configured
     as an NIS client and is bound to the master server, ypinit is able to use
     the ypwhich(1) utility to obtain a list of maps exported by the master
     server.  If the system is not configured as a client of the NIS master,
     ypinit uses a hardcoded list of maps, some of which may or may not actu-
     ally exist on the master.  The system administrator can edit the ypinit
     script and modify the map list if necessary.  Otherwise, individual maps
     can be transfered manually from the master using ypxfr(8).

     The ypinit utility supports the following options:

     -m [domainname]
             Set up a master server.  By default, ypinit sets up a server for
             the system default domain.  The user can override this default by
             specifying domainname explicitly.  Maps are constructed from
             scratch using local files as templates using the yp_mkdb(8) util-

     -s master_server [domainname]
             Set up a slave server using master_name as the master.  Maps are
             copied from master_server to the slave using ypxfr(8).  By
             default, ypinit sets up a server for the system default domain.
             The user can override this default by specifying domainname

     -u [domainname]
             Update the ypservers map on the master server.  When a new slave
             server is added to a domain, its hostname must be added to the
             ypservers map so that yppush(8) can propagate updates on the mas-
             ter to all of the slaves.

     /etc/bootparams        Bootparams source file
     /etc/ethers            Ethers data source file
     /etc/group             Group source file
     /etc/hosts             Hostname/IP address source file
     /etc/netid             RPC netid source file
     /etc/networks          Networks source file
     /etc/protocols         Protocols source file
     /etc/publickey         RPC public key/secret key source file
     /etc/services          Services data source file
     /var/yp/master.passwd  Passwd database source file
     /var/yp/netgroup       Netgroup data source file
     /var/yp/ypservers      Ypservers source file (generated by ypinit)

     mknetid(8), revnetgroup(8), yp(8), yp_mkdb(8), yppush(8), ypserv(8),

     This version of ypinit is based on the ypinit script in OpenBSD.  It
     first appeared in FreeBSD 3.0.

     The original script was written by Mats O Jansson <>.
     It was modified for FreeBSD by Bill Paul <>.

FreeBSD 6.2                    November 10, 1997                   FreeBSD 6.2


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