Restricting users from certain privileges

[Zenny]

Hi:

I could not figure out how to restrict users or other users from certain
privileges to execute certain commands in FreeBSD/NanoBSD?

What I meant is I want to create a NanoBSD image in which there will be an
additional user, say 'admin'. I need to give this new user (admin) some
privileges to run some root-can-only-execute commands, but not all (ACL
similar to the firmwares in adsl modems from ISPs).

I read Dru Lavingne's 'BSD Hacks' and Joseph Kong's 'Designing BSD
Rootkits' besides FreeBSD handbook, but I simply could not figure out.
Could anyone throw some light on this? Appreciate it!

Thanks!

/zenny

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