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OpenSolaris 2009.06 - man page for yppasswd (opensolaris section 1)

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yppasswd(1)				  User Commands 			      yppasswd(1)

       yppasswd - change your network password in the NIS database

       yppasswd [username]

       The  yppasswd  utility  changes the network password  associated with the user username in
       the Network Information Service (NIS) database. If the user has done a keylogin(1), and	a
       publickey/secretkey  pair  exists  for  the user in the NIS publickey.byname map, yppasswd
       also re-encrypts the secretkey with the new password. The NIS password  may  be	different
       from the local one on your own machine.

       yppasswd prompts for the old  NIS password, and then for the new one. You must type in the
       old password correctly for the change to take effect.  The  new	password  must	be  typed
       twice, to forestall mistakes.

       New  passwords  must  be  at  least  four characters long, if they use a sufficiently rich
       alphabet, and at least six characters long if monocase. These rules are relaxed if you are
       insistent  enough.  Only  the  owner  of the name or the super-user may change a password;
       superuser on the root master will not be prompted for the old password, and does not  need
       to follow password construction requirements.

       The NIS password daemon, rpc.yppasswdd must be running on your NIS server in order for the
       new password to take effect.

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWnisu			   |

       keylogin(1),  login(1),	NIS+(1),  nispasswd(1),  passwd(1),  getpwnam(3C),  getspnam(3C),
       secure_rpc(3NSL), nsswitch.conf(4), attributes(5)

       Even  after  the user has successfully changed his or her password using this command, the
       subsequent login(1) using the new password will be successful only if the user's  password
       and  shadow  information  is  obtained  from NIS. See getpwnam(3C), getspnam(3C), and nss-

       The use of yppasswd is discouraged, as it is now only a wrapper around the passwd(1)  com-
       mand,  which  should be used instead. Using passwd(1) with the -r nis option (see NIS+(1))
       will achieve the same results, and will be consistent across all the different  name  ser-
       vices available.

       The update protocol passes all the information to the server in one RPC call, without ever
       looking at it. Thus, if you type your old password incorrectly, you will not  be  notified
       until after you have entered your new password.

SunOS 5.11				   28 Nov 2001				      yppasswd(1)
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