TTY files permission changed

[Peter Chuang]

Experts,

One of our old server D200 with 10.20 periodly changed the permission to read only in /dev/tty*. Only several tty files have this problem. When users tried to telnet to server, they got the error message: "CAN NOT OPEN /dev/tty READ/WRITE TO ASK. QUITTING." Any ideal what cause this problem. Thanks

Peter

[Steven E. Protter]

Greetings Peter,

How about showing us the before and after permissions.

SEP

[Massimo Bianchi · Accepted solution]

Hi,
what caused no, but solution can be to re-create them.


insf -e -Cpseudo

Massimo

[Peter Chuang]

The permission should be crw-rw-rw, but several ports are crw-r-r instead.

[doug mielke]

I've had faulty printer communication setups change permissions ( and worse) on printer interface files.
Could bad terminal comm setting send back garbage to the /dev/tty file and damage it?