Hi, we have got NIS and NFS server and clients installed on linux systems. I want to know what are the general tools for managing NIS/NFS users - like checking how many users are logged in, sending messages to all users from NIS/NFS server to clients, taking backup etc.? I will appreciate your help. Thanks. Sachin.
============================

I tried to find it on google I think rwho and rwall can solve two of the above problems. But do I need to have them in both clients and server? Thanks.
============================

I will greatly appreciate if somebody tells me (using simple example) how to use these commands, or something else which serves similar purpose, on NIS/NFS server/client. Thanks again.