Using the override terminal
An override terminal exists for root in case the
security databases become corrupted and all logins are disallowed.
This is a special entry in the file /etc/default/login.
The entry identifies the tty to be used when doing an override login
for root. The default entry (shown below) permits root
to log in on /dev/tty01, also known as the first multiscreen
on the console. You can change this default to be another login device.
OVERRIDE=tty01
When the databases are compromised
and root logs in on the override terminal,
this message is displayed:
The security databases are corrupt.
However, login at terminal tty is allowed.
When the account is locked
and root logs in on the override terminal,
this message is displayed:
Account is disabled but console login is allowed.
The tty used should be physically secure; remember that normal terminal
locks do not apply to the superuser account on this tty.
Next topic:
Automatic database checking and recovery: tcbck(ADM)
Previous topic:
Checking the system after a crash
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003