[sudo-users] How to disable ( deny ) user to change the password of root

[Gordon Messmer]

edwardspl at ita.org.mo wrote:
> 
> Sorry, what means about the sentence ?

The last line of the script that I suggested to you was:

passwd -- "$1"

That line would be more secure if it were specific about where "passwd" 
should be:

/usr/bin/passwd -- "$1"