ypwhich - return name of NIS server or map master

ypwhich is part of the yp-tools package, which was written by Thorsten Kukuk <kukuk@linux-nis.org>.

YP Tools 4.2.3                                     April 2010                                         ypwhich(1)

ypwhich  returns  the  name of the NIS server that supplies the NIS services to a NIS client, or which is
       the master for a map.  If invoked without arguments, it gives the NIS server for the  local  machine.  If
       hostname is specified, that machine is queried to find out which NIS master it is using.

/var/yp/nicknames
              map nickname translation table.

       ypwhich - return name of NIS server or map master

-ddomain
              Specify a domain other than the default domain.

       -t     This option inhibits map nickname translation.

       -mmname
              Find the master NIS server for a map.  No hostname can be specified with the -m option.  mname can
              be a mapname or nickname for a map.  If mname is omitted, ypwhich will produce a list of available
              maps.

       -x     Display the map nickname translation table.

       -Vn    Version of ypbind(8), V3 is default. Use V2 for NIS clients not supporting IPv6.

domainname(8), nicknames(5), ypbind(8), ypcat(1), ypmatch(1), yppoll(8), ypserv(8), ypset(8)

ypwhich [ -ddomain ] [ -Vn ] [ hostname ]
       ypwhich [ -ddomain ] [ -t ] -m [ mname ]
       ypwhich-x