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如何在12.04中恢复默认软件源？

upgraderepository
我的软件源出了问题。我需要一个全新的副本，因为我的旧副本有很多问题。我已经尝试过http://repogen.simplylinux.ch/，但是我不知道该选择哪个选项，而且生成的列表也不能让我升级。所以请给我原始的软件源，这样我就可以替换掉现在的。我来自印度。
你有没有检查过这个链接？http://ubuntuguide.org/wiki/Ubuntu:Precise#Edit_the_repository_sources_list - penreturns
@florian 在我提问之前，我确实看到过那个。那就是我知道提到的网站的方式。 - Sreehari Rajendran
1个回答
我正在清空我的/etc/apt/sources.list文件。它只包含随Ubuntu一起提供的软件源。其中一些在默认配置中是禁用的，但我不知道具体哪些。无论如何，这个列表不应该给你带来问题。你还应该清空/etc/apt/sources.list.d文件夹，其中保存了你添加的所有ppa。
所以，以下是列表：
# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Beta amd64 (20120328)]/ dists/precise/main/binary-i386/

# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Beta amd64 (20120328)]/ dists/precise/restricted/binary-i386/
# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Beta amd64 (20120328)]/ precise main restricted

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

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

deb http://archive.ubuntu.com/ubuntu precise-security main restricted
# deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
deb http://archive.ubuntu.com/ubuntu precise-security universe
# deb-src http://security.ubuntu.com/ubuntu precise-security universe
deb http://archive.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