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Re: "su -" and "su" - what is the real difference?



On 7/28/06, Boris Veytsman <borisv@lk.net> wrote:
One of the most important implication for our setup here is the
follwing.  We have a rule that after each root login the admin makes
an entry in the system ChangeLog file.  If I do this from emacs, and
hit C-x 4 a, the following entry appears when I use su:

 2006-07-28  Boris Veytsman  <borisv@lk.net>
         *

When I use 'su -', the entry is marked as done by root, which is less
convenient in a multi-admin situation.

I've seen multi-admin systems where each admin has a separate login
with a distinct password not known to the other admins, but all with
uid 0.  I'm not sure how the logging appears in this case, so I don't
know if it really solves the same problem.  One problem it *does*
solve is being able to disable the root access of someone who is no
longer on the admin staff without having to change the root password.

--
Michael A. Marsh
http://www.umiacs.umd.edu/~mmarsh
http://mamarsh.blogspot.com



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