# cat /etc/issue

https://help.ubuntu.com/community/SerialConsoleHowto

# cat /etc/init/tty1.conf

Изменения приглашения getty в терминалах

[gate:~] # diff /etc/gettytab
39c39
<       :cb:ce:ck:lc:fd#1000:im=\r\n%s/%m (%h) (%t)\r\n\r\n:sp#1200:\
---
>       :cb:ce:ck:lc:fd#1000:im=MS DOS 3.0\r\n\r\n:sp#1200:\

Запуск getty на COM портах для нульмодемного подключения

[gate:~] # rcsdiff /etc/ttys
diff -r1.2 /etc/ttys
46a47
> cuad0 "/usr/libexec/getty std.9600"   vt100   on  secure
...
[gate:~] # kill -1 1

Запуск getty на COM портах для модемного подключения (Вне-сетевой доступ)

[gate:~] # cat /etc/ttys
...
ttyd1   "/usr/libexec/getty std.9600"   vt100   on secure
...
[gate:~] # kill -1 1