Controlling ttys, and how to get rid of them.

[Chris Lewis]

In article <176 at ucms.ucms.uucp> dave at ucms.UUCP (Dave Settle) writes:

>What happens is that in some circumstances, I can only login using an account
>without a password. If I try to login as a user who has a password, I get:

>Machine XYZ .... etc
>login: dave
>Login incorrect
>login:

>This affects every user who has a password, but only affects the one terminal -
>I can login on other terminals fine (it asks for my password as per usual).

I've seen this occur a couple of times on 386/ix - to confirm, after 
successfully logging in on the port that's acting wierd, do this:

	echo hello > /dev/tty

Ours comes back with "can't open".  Killing everything in sight on that
line usually helps.  Used to get it with a serial device driver we hadn't
got working w.r.t. setting process groups.

[The reason why this relates is that login can't stty -echo when ttyname
or isatty fails which they will do if /dev/tty won't open]
-- 
Chris Lewis, Markham, Ontario, Canada
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