Linux in a Nutshell, 6th Edition

Name

yppasswdd

Synopsis

rpc.yppasswdd [options]

NFS/NIS command. Server for modifying the NIS password file. yppasswdd handles password-change requests from yppasswd. It changes a password entry only if the password represented by 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 ...