For more about NIS

Command	Description
ypserv(1Mnis)	Looks up requested information in a map. ypserv is a daemon that runs on NIS servers with a complete set of maps. At least one ypserv daemon must be present on the network for NIS to function.
ypbind	Initiates binding. ypbind is the NIS binder daemon. It must be present on both clients and servers. It initiates binding by finding a ypserv process that serves maps within the domain of the requesting client. ypserv must run on each NIS server. For additional information about ypbind, see the ypserv(1Mnis) manual page.
ypinit(1Mnis)	Automatically creates maps for an NIS server from files located in /etc. ypinit also constructs the initial maps that are not built from files in /etc, such as ypservers. Use ypinit to set up the master NIS server and the slave NIS servers for the first time, as well as to initialize all clients.
ypbuild(1Mnis)	Updates NIS maps by reading /var/yp/Makefile. You can use ypbuild to update all maps based on the input files or to update individual maps.
makedbm(1Mnis)	Takes an input file and converts it into valid dbm .dir and .pag files that NIS can use as maps. You can also use makedbm -u to ``disassemble'' a map, so that you can see the key-value pairs that comprise it.
ypxfr(1Mnis)	Moves an NIS map from one server to another. You can run ypxfr interactively, or periodically from a crontab file. It is also called by ypserv to initiate a transfer.
yppush(1Mnis)	Copies a new version of an NIS map from the NIS master server to its slaves. You run it on the master NIS server.
ypset(1Mnis)	Tells a ypbind process to bind to a named NIS server. ypset is not for casual use.
yppoll(1Mnis)	Tells which version of an NIS map is running on a server that you specify. It also lists the master server for the map.
ypcat(1nis)	Displays the contents of an NIS map.
ypmatch(1nis)	Prints the value for one or more specified keys in an NIS map. You cannot specify which NIS server's version of the map you are seeing.
ypwhich(1nis)	Shows which NIS server a client is using at the moment for NIS services or, if invoked with the -m mapname option, which NIS server is master of each of the maps.
ypupdated(1Mnis)	Facilitates the updating of NIS information.
yppasswd(1nis)	Changes user network passwords in the NIS database.
yppasswdd(1Mnis)	Handles requests to change user network passwords in the NIS database made by yppasswd (or passwd(1)).

 ------------------------------------------------------------------------
| Command         |  Description                                        |
|-----------------|-----------------------------------------------------|
| ypserv(1Mnis)   |  Looks up requested information in a map.  ypserv is|
|                 |  a daemon that runs on NIS servers with a complete  |
|                 |  set of maps.  At least one ypserv daemon must be   |
|                 |  present on the network for NIS to function.        |
|-----------------|-----------------------------------------------------|
| ypbind          |  Initiates binding.  ypbind is the NIS binder       |
|                 |  daemon.  It must be present on both clients and    |
|                 |  servers.  It initiates binding by finding a ypserv |
|                 |  process that serves maps within the domain of the  |
|                 |  requesting client.  ypserv must run on each NIS    |
|                 |  server.  For additional information about ypbind,  |
|                 |  see the ypserv(1Mnis) manual page.                 |
|-----------------|-----------------------------------------------------|
| ypinit(1Mnis)   |  Automatically creates maps for an NIS server from  |
|                 |  files located in /etc.  ypinit also constructs the |
|                 |  initial maps that are not built from files in /etc,|
|                 |  such as ypservers.  Use ypinit to set up the master|
|                 |  NIS server and the slave NIS servers for the first |
|                 |  time, as well as to initialize all clients.        |
|-----------------|-----------------------------------------------------|
| ypbuild(1Mnis)  |  Updates NIS maps by reading /var/yp/Makefile.  You |
|                 |  can use ypbuild to update all maps based on the    |
|                 |  input files or to update individual maps.          |
|-----------------|-----------------------------------------------------|
| makedbm(1Mnis)  |  Takes an input file and converts it into valid dbm |
|                 |  .dir and .pag files that NIS can use as maps.  You |
|                 |  can also use makedbm -u to ``disassemble'' a map,  |
|                 |  so that you can see the key-value pairs that       |
|                 |  comprise it.                                       |
|-----------------|-----------------------------------------------------|
| ypxfr(1Mnis)    |  Moves an NIS map from one server to another.  You  |
|                 |  can run ypxfr interactively, or periodically from a|
|                 |  crontab file.  It is also called by ypserv to      |
|                 |  initiate a transfer.                               |
|-----------------|-----------------------------------------------------|
| yppush(1Mnis)   |  Copies a new version of an NIS map from the NIS    |
|                 |  master server to its slaves.  You run it on the    |
|                 |  master NIS server.                                 |
|-----------------|-----------------------------------------------------|
| ypset(1Mnis)    |  Tells a ypbind process to bind to a named NIS      |
|                 |  server.  ypset is not for casual use.              |
|-----------------|-----------------------------------------------------|
| yppoll(1Mnis)   |  Tells which version of an NIS map is running on a  |
|                 |  server that you specify.  It also lists the master |
|                 |  server for the map.                                |
|-----------------|-----------------------------------------------------|
| ypcat(1nis)     |  Displays the contents of an NIS map.               |
|-----------------|-----------------------------------------------------|
| ypmatch(1nis)   |  Prints the value for one or more specified keys in |
|                 |  an NIS map.  You cannot specify which NIS server's |
|                 |  version of the map you are seeing.                 |
|-----------------|-----------------------------------------------------|
| ypwhich(1nis)   |  Shows which NIS server a client is using at the    |
|                 |  moment for NIS services or, if invoked with the -m |
|                 |  mapname option, which NIS server is master of each |
|                 |  of the maps.                                       |
|-----------------|-----------------------------------------------------|
| ypupdated(1Mnis)|  Facilitates the updating of NIS information.       |
|-----------------|-----------------------------------------------------|
| yppasswd(1nis)  |  Changes user network passwords in the NIS database.|
|-----------------|-----------------------------------------------------|
| yppasswdd(1Mnis)|  Handles requests to change user network passwords  |
|                 |  in the NIS database made by yppasswd (or passwd(1) |
|-----------------|-----------------------------------------------------|