yppasswd - change your network password in the NIS database
The yppasswd utility changes the network password associ-
ated with the user username in the Network Information Ser-
vice (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 secret-
key 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 charac-
ters 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
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWnisu |
keylogin(1), login(1), nis+(1), nispasswd(1), passwd(1),
getpwnam(3C), getspnam(3C), secure_rpc(3NSL),
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 nsswitch.conf(4).
The use of yppasswd is discouraged, as it is now only a
wrapper around the passwd(1) command, which should be used
instead. Using passwd(1) with the -r nis option (see
nis+(1)) will achieve the same results, and will be con-
sistent across all the different name services 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.
Man(1) output converted with