Linux in a Nutshell, Fifth Edition

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Chapter 3: Linux Commands

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

yppasswd matches the encrypted password of that entry and if the

user ID and group ID match those in the server’s /etc/passwd file.

Then it updates /etc/passwd and the password maps on the local

server. If the server was compiled with the CHECKROOT=1

option, the password is also checked against the root password.

Options

-D dir

Specify a directory that contains the passwd and shadow files

for rpc.yppasswdd to use instead of /etc/passwd and /etc/

shadow. Useful to prevent all users in the NIS database from

automatically gaining access to the NIS server.

-e chsh|chfn]

Permit users to change the shell or user information in the

GECOS field of their passwd entry. By default, rpc.yppasswdd

does not permit users to change these fields.

-E program

Specify a program to edit the passwd and shadow files instead

of rpc.yppasswdd. The program should return 0 for successful

completion; 1 for successful completion, but the pwupdate

program should not be run to update the NIS server’s maps;

and anything else if the change failed.

-p pwfile

Specify an alternative passwd file to /etc/passwd, to prevent all

users in the NIS database from automatically gaining access to

the NIS server.

--port num

Specify a port that rpc.yppasswdd will try to register itself,

allowing a router to filter ...