# dpkg-reconfigure console-setup
Keyboard Model: Generic 102-key (Intl) PC
Origing of the keyboard: Russia
...
Encoding to use on the console: UTF-8
Character set to support: Cyrillic - KOI8-R and KOI8-U
...
===== FreeBSD =====
# cat /etc/rc.conf
...
font8x16="cp866-8x16"
scrnmap="koi8-r2cp866"
keymap="ru.koi8-r"
...
# /etc/rc.d/syscons restart
freebsd8# sed -i.bak 's/cons25/cons25r/' /etc/ttys
# kill -1 1