Alternate Shells

[Doug Gwyn <gwyn>]

> I helped make this decision -- it was because people who left their
> terminals unattended for a few minutes (to relieve themselves, say)
> would find themselves with a strange shell the next time they logged
> on.  This kind of prank became such a pain (besides being virtually
> unfixable without finding a super-user, a species of (alleged) person
> not always available when you have an assigment due the next morning)
> that we decided to turn off chsh to non-normal shells except for root.

But that doesn't help.  The prankster can always add something like
	exec echo goodbye
as the last line of a .profile (or .login) even if chsh never existed.
The solution to unattended logged-in terminals is to not have any.