如何在12.04中恢复默认存储库？
可能重复：
如何恢复默认存储库？
我的存储库被搞砸了。 我需要一份新的副本，因为我的旧副本有很多问题。 我已经尝试了http://repogen.simplylinux.ch/，但我不知道该选择什么，它生成的列表不允许我升级。 所以请给我原始的存储库，以便我可以替换这个。 我来自印度。
我正在抛弃我的/etc/apt/śources.list 。 它只包含Ubuntu附带的存储库。 其中一些在默认配置中被停用，但我不知道哪些。 无论如何，这个列表不应该给你带来问题。 您还应该清空文件夹/etc/apt/sources.list.d ，其中保存了您添加的所有ppas。
列表如下：
# 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 ## NB 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 ## NB 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 ## NB 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