The 5 yp commands in /usr/bin are
-r-xr-xr-x   1 root     system         6604 Jan 20 21:03 /usr/bin/ypcat
-r-xr-xr-x   1 root     system         6326 Jan 20 21:03 /usr/bin/ypmatch
-r-sr-xr-x   1 root     security      15216 May 18 2004  /usr/bin/yppasswd
-r-xr-xr-x   1 root     system        10834 Jan 20 21:03 /usr/bin/ypservers
-r-xr-xr-x   1 root     system        11830 Jan 20 21:03 /usr/bin/ypwhich

ypwhich    tells you our NIS server is dind1.edc.delphion.com

ypcat -x   tells you what options you can use with ypcat -k
Use "passwd"    for map "passwd.byname"
Use "group"     for map "group.byname"
Use "networks"  for map "networks.byaddr"
Use "hosts"     for map "hosts.byaddr"
Use "protocols" for map "protocols.bynumber"
Use "services"  for map "services.byname"
Use "aliases"   for map "mail.aliases"
Use "ethers"    for map "ethers.byname"

ypcat -k passwd   shows you the NIS password file
ypcat -k group    shows you the NIS group file

=============================================================================

Here are the differences in the /etc/rc.nfs file on a NIS client machine as
are in Limerick.

1) The following lines are uncommented and the NIS domain name is added.
   From  #if [ -x /usr/bin/domainname ]; then
         #     /usr/bin/domainname ibm
         #fi
   To    if [ -x /usr/bin/domainname ]; then
               /usr/bin/domainname delphion.com
         fi

2) This line is also uncommented
   From  #dspmsg cmdnfs.cat -s 8 2 "starting NIS services:\n"
   To    dspmsg cmdnfs.cat -s 8 2 "starting NIS services:\n"

3) And these lines are uncommented,
   From  #if [ -x /usr/lib/netsvc/yp/ypbind ]; then
         #     start ypbind /usr/lib/netsvc/yp/ypbind
         #fi
   To    if [ -x /usr/lib/netsvc/yp/ypbind ]; then
               start ypbind /usr/lib/netsvc/yp/ypbind
         fi

=============================================================================