Victor Nazarov wrote:
[EMAIL PROTECTED] wrote:
Suppose bob is a teacher and he is teaching something to alice and carol. Alice want to show her files to only bob, and carol also want to show her files only to bob.
How to do that ?
I think alice and carol should create two different groups and add bob to these groups. IMHO, allowing regular users to create groups is essensial in multiuser environment. I don't know what's the problem is, but it's better then ACLs.
This is an example of a correct technical solution to a problem that works only in the rare situation where users' main focus of attention is the management of their online resources, e.g. all are software engineers.

For the rest of the world, collaboration facilities must be managed as offices are managed. The ACL is analogous to the list of individuals who have keys to a particular facility. In this situation the teacher needs to own and control the drop slot, a "device" within the office to which he/she controls the ACL and into which users can place files that can only be read by the owner/manager of the room. Relying upon users to create and manage groups for this kind of thing is not realistic.

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