Прошу выложить содержимое sources.list в кубунту 9.10

deb http://mirror.yandex.ru/ubuntu/ karmic main restricted universe multiverse
deb-src http://mirror.yandex.ru/ubuntu/ karmic main restricted universe multiverse

deb http://mirror.yandex.ru/ubuntu/ karmic-backports main restricted universe multiverse
deb-src http://mirror.yandex.ru/ubuntu/ karmic-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu/ karmic-security main restricted universe multiverse
deb-src http://mirror.yandex.ru/ubuntu/ karmic-security main restricted universe multiverse

deb http://mirror.yandex.ru/ubuntu/ karmic-updates main restricted universe multiverse
deb-src http://mirror.yandex.ru/ubuntu/ karmic-updates main restricted universe multiverse

#
# deb cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release amd64 (20091027.1)]/ karmic main restricted

deb cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release amd64 (20091027.1)]/ karmic main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://ru.archive.ubuntu.com/ubuntu/ karmic main restricted
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-updates main restricted
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic universe
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic universe
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-updates universe
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic multiverse
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic multiverse
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-updates multiverse
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://ru.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse
deb-src http://ru.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu karmic partner
deb-src http://archive.canonical.com/ubuntu karmic partner

deb http://security.ubuntu.com/ubuntu karmic-security main restricted
deb-src http://security.ubuntu.com/ubuntu karmic-security main restricted
deb http://security.ubuntu.com/ubuntu karmic-security universe
deb-src http://security.ubuntu.com/ubuntu karmic-security universe
deb http://security.ubuntu.com/ubuntu karmic-security multiverse
deb-src http://security.ubuntu.com/ubuntu karmic-security multiverse
deb http://ppa.launchpad.net/kubuntu-ppa/ppa/ubuntu karmic main
deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu karmic main
deb http://download.virtualbox.org/virtualbox/debian karmic non-free

У меня он выглядит так:
#
# deb cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.1)]/ karmic main restricted

# deb cdrom:[Kubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.1)]/ karmic main restricted

deb http://security.ubuntu.com/ubuntu/ karmic-security restricted main multiverse universe
deb http://archive.ubuntu.com/ubuntu/ karmic-updates restricted main multiverse universe
deb http://archive.ubuntu.com/ubuntu/ karmic main restricted universe multiverse

а как в нём делать изменения?
admnes@admnes-desktop:~$ su
Пароль:
root@admnes-desktop:/home/admnes# cd /etc/apt
root@admnes-desktop:/etc/apt#
а дальше?