Marius,

Not sure if you are aware, but ldm these days has a "Guest" login
feature.  You can set usernames/passwords in lts.conf for each machine
when the Guest login button is pressed, or the user can enter their own.

This should solve teachers vs students issue.

Then, the other piece is to make a temporary homedir for each user
account that logs in that is based upon your golden one.  Well, that can
be done with pam_mount and unionfs.  the tmpfs overlay can either be
something created on the fly, or it can be something static that is
flushed upon login by a script.

HTH,

-Gadi

On Tue, 2009-04-28 at 21:26 +0200, Marius Flage wrote:
> Jordan Erickson wrote:
> 
> > I would propose a "temporary" user of sorts that pulls from the 
> > "skel/template" you created, does a pam makehomedir or whatever it is, 
> > and removes it upon logout. This way, you have separate user accounts 
> > for each login, and changes can be wiped upon user logout.
> 
> The immediate problem with this is how to keep control over the
> different usernames/passwords currently in use. Now it's easy just
> telling all students to use "student/student" to log in. If we have to
> inform them to use random usernames/passwords, then it'll quickly become
> a user administration nightmare. But maybe you meant some other way of
> creating the accounts..?
> 
> It needs to be simple and predictable.
> 
> - Marius
> 
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