Here's what I do:

su postgres /usr/local/postgres/bin/Startup.sh

where Startup.sh contains the commands used to get the daemon going.

>I would like to run a database monitor deamon from rc.local but don't
>want it to have root permissions.  How can I get it to run with
>different permissions?
>
>Thanks.
>
>Cheers,
>Brook
>
>===========================================================================
>Brook G. Milligan                      Internet:  bmilliga@nmsu.edu
>Department of Biology
>New Mexico State University            Telephone:  (505) 646-7980
>Las Cruces, New Mexico  88003  U.S.A.  FAX:        (505) 646-5665
>===========================================================================

--Michael