sudoers

[Germana Oliveira <germanaoliveirab@gmail.com>]

Hi!

I am using sudoers file to try to limit the things a user can do with 
sudo. The sudo is going to be use because this is a lab to tech 
informatics, so people probably need to know administrative tasks... but 
i want to avoid they change the root password and edit the sudoers file.

So, i have this in sudoers:

user1  ALL=/usr/bin/*, /usr/sbin/*, /bin/*, /sbin/*, !/usr/bin/passwd 
root, !/bin/su

How can i void the user1 edit sudoers file??

Thanks!

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