How to achieve E-Mail Notification on root login?

Matthias Petermann matthias at
Tue Feb 12 12:32:57 UTC 2013


given there is a FreeBSD system with users in the wheel group, what is  
the best practise
to send out a notification via E-Mail if one of them becomes root via  
su? In an ideal
case the E-Mail would contain the user name and the time.

I thought about using sudo but this is not in the base system which I  
would prefer.

Kind regards,

Matthias Petermann <matthias at>

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