Не удалось установить GIMP из-за [дубликата]

Откройте терминал,

Нажатие Ctrl + Высокий звук + Выполнение T

это:

sudo -i
nano /etc/apt/sources.list

В открытом файле, удалите содержание и вставьте это:

## Uncomment the following two lines to fetch updated software from the network
deb http://old-releases.ubuntu.com/ubuntu quantal main restricted
deb-src http://old-releases.ubuntu.com/ubuntu quantal main restricted

## Uncomment the following two lines to fetch major bug fix updates produced
## after the final release of the distribution.
deb http://old-releases.ubuntu.com/ubuntu quantal-updates main restricted
deb-src http://old-releases.ubuntu.com/ubuntu quantal-updates main restricted

## Uncomment the following two lines to add software from the 'universe'
## repository.
## 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
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://old-releases.ubuntu.com/ubuntu quantal universe
deb-src http://old-releases.ubuntu.com/ubuntu quantal universe

deb http://old-releases.ubuntu.com/ubuntu quantal-security main restricted
deb-src http://old-releases.ubuntu.com/ubuntu quantal-security main restricted

deb http://old-releases.ubuntu.com/ubuntu quantal-security universe
deb-src http://old-releases.ubuntu.com/ubuntu quantal-security universe

deb http://old-releases.ubuntu.com/ubuntu quantal multiverse
deb-src http://old-releases.ubuntu.com/ubuntu quantal multiverse

deb http://old-releases.ubuntu.com/ubuntu quantal-backports main restricted universe multiverse

Ctrl + O, сохраните файл. Ctrl + X, закройте нано.

Продолжаются выполненный в терминале:

sudo -i
apt-get update
apt-get dist-upgrade
apt-get install gimp
apt-get clean