Thanks Logan,
Yes "we" were confused (or rather poorly self educated) on the unix 
security model.  I found this to be a good explanation for a newbie such 
as myself:
http://www.dsm.fordham.edu/~moniot/Classes/InternetWebF00/unix-security/unix-security.html

jp


Logan Capaldo wrote:
> On Jun 13, 2006, at 3:39 AM, Jeff Pritchard wrote:
> 
>> I have tried to set up a group that
>> includes ruby, the script, and the logger library as users
> 
> Um, groups include users (logins). A group or user is not per-file/
> executable (unless you have setuid or setgid set). Are we maybe
> confused about the Unix security model? You need to run ruby as a
> user with access to that directory.


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