Re: apropos permissions

["Paul J. Bell" <paulb nomurany com>]

Heltzel, Dennis wrote:

> > -----Original Message-----
> > From: Jack Coates [SMTP:jack nemo index berkeley edu]
> > Sent: Wednesday, September 30, 1998 11:44 PM
> > To:   RedHat List
> > Subject:      apropos permissions
> >
> > Hi all,
> >
> > where should I look for a quick and dirty explanation of permissions?
> > I've figured out what commands like chmod 766 foo.bar or chmod u+x
> > foo.bar do, sort of, but I don't see how to do something like:
> >
> > log in as root
> > create shared directory structure
> > Assign group A read-only rights, group B read-write, and group C
> > no-access.
> >
> [Heltzel, Dennis]  You would need to use ACL's (Access Control Lists) for
> this kind of fine granularity security. I don't believe any Linux FS has
> implemented these yet, so you are probably not going to be able to do it.
> Non-ACL UNIX security has only 3 levels,
> 1) Owner - Single user, not a group
> 2) Group - Subset of all users, can have many members
> 3) All - Everyone on the system
>
> >  man chmod gives nothing but command-line switches. Midnight Commander's
> > interface made things a lot clearer, but I still don't really grasp
> > what's going on.
> >
> >
> > Jack
> >
> >
> > --
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> --
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you could however do this:

directory(ies) and files owned by group uid 'b' and gid 'a'
set file permissions to: 640

    -paul


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