Resolução de problemas na atualização

[paulogabriel]

Olá pessoal,
Sou iniciante no Linux e estou curtindo pra caramba. Ainda não sei trabalhar bem com a linguagem, mas estou aprendendo.
Uso uma máquina 64-bit, ubuntu 12.04 LTS, que está apresentando um problema na atualização. Quando dou o comando:

sudo apt-get update

Surge, ao final, as seguintes informações:

W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ precise/partner amd64 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_precise_partner_binary-amd64_Packages)
W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ precise/partner i386 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_precise_partner_binary-i386_Packages)
W: Você terá que executar apt-get update para corrigir estes problemas

Alguém pode dar alguma dica de como posso corrigir isso? Vi em vários tópicos, mas cada um fala um coisa diferente (nada resolveu). Vou apostar nesse aqui.
Valeu!

[Arthur Bernardes]

Execute em terminal e poste o resultado aqui..!

cat /etc/apt/sources.list

[paulogabriel]

# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/main/binary-i386/

# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/restricted/binary-i386/
# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ precise main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://br.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://br.archive.ubuntu.com/ubuntu/ precise main restricted

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

## 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://br.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://br.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
deb http://security.ubuntu.com/ubuntu precise-security universe
deb-src http://security.ubuntu.com/ubuntu precise-security universe
deb http://security.ubuntu.com/ubuntu precise-security multiverse
deb-src http://security.ubuntu.com/ubuntu precise-security 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 precise partner
deb-src http://archive.canonical.com/ubuntu precise partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main
deb http://archive.canonical.com/ precise partner
deb-src http://archive.canonical.com/ precise partner

[clodoaldops]

W: Você terá que executar apt-get update para corrigir estes problemas

-abra  Termina e rode o comando:
sudo apt-get update && sudo apt-get upgrade

-depois reinicie o pc

[irtigor]

Comente as duas ultimas linhas do sources.list (coloque uma cerquilha no inicio das linhas).

[paulogabriel]

Obrigado pessoal,

Fiz de um outro modo, mais simples, que deu certo. Precisava trabalhar e me lembrei que um amigo uma vez fez esse procedimento.
Fiz o seguinte:
Entrei em "Gerenciador de atualizações" >>> "Configurações" >>> "Outros Programas" >>> Desmarquei os dois primeiros "Parceiros da Canonical", pois se repetiam embaixo.

Rodei sudo apt-get update e não apresentou mais esse problema.

É um procedimento certo ou só "maquiou" o problema?

Agradeço demais a contribuição.

[irtigor]

É outra maneira de fazer o que eu havia falado, olhe o arquivo novamente e verá a diferença.