change ubuntu source

修改源并更新升级Ubuntu

• 不同的网络状况连接以下源的速度不同，所以cn99并不一定 是最快的源。建议在 添加前手动验证以下源的连接速度(ping下就行)，比如说北京网通用户连接cn99就非常慢，而ftp.sjtu.edu.cn是相对较快的源，选择最 快的源可大大节省下载时间，请根据自己网络环境设置更新服务器，以达到最快的速度。（经试验，执行下文中需要的apt-get命令或使用《新立得软件包管 理器》时，必须更改了默认的更新服务器才可以使用，否则可能找不到很多安装包，或者安装包版本低。）

  注意，你可以同时加入几个源。或者将官方的源(也就是下面的Archive.ubuntu.com的条目)直接加在文件的最后，以避免出现 404 Not Found 文件未发现 的错误。

• 在终端执行以下命令（第一条是备份现有服务器列表，第二条是使用Gedit编辑，您也可以使用自己喜爱的编辑器编辑，如nano，kate，vim等。）
• sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup
  sudo gedit /etc/apt/sources.list
• 从以下各服务器列表内容中选择一段替换文件中的所有内容（请根据自己网络环境设置更新服务器，以达到最快的速度。）
  • Archive.ubuntu.com 更新服务器(欧洲，此为官方源，推荐使用。)：
• deb edgy main restricted universe multiverse
  deb edgy-security main restricted universe multiverse
  deb edgy-updates main restricted universe multiverse
  deb edgy-proposed main restricted universe multiverse
  deb edgy-backports main restricted universe multiverse
  deb-src edgy main restricted universe multiverse
  deb-src edgy-security main restricted universe multiverse
  deb-src edgy-updates main restricted universe multiverse
  deb-src edgy-proposed main restricted universe multiverse
  deb-src edgy-backports main restricted universe multiverse
  deb edgy main restricted universe multiverse
  • Ubuntu.cn99.com 更新服务器(江苏省常州市电信，推荐电信用户使用。）：
• deb edgy main restricted universe multiverse
  deb edgy-security main restricted universe multiverse
  deb edgy-updates main restricted universe multiverse
  deb edgy-proposed main restricted universe multiverse
  deb edgy-backports main restricted universe multiverse
  deb-src edgy main restricted universe multiverse
  deb-src edgy-security main restricted universe multiverse
  deb-src edgy-updates main restricted universe multiverse
  deb-src edgy-proposed main restricted universe multiverse
  deb-src edgy-backports main restricted universe multiverse
  deb edgy main restricted universe multiverse
  • Mirror.lupaworld.com 更新服务器(浙江省杭州市电信，亚洲地区官方更新服务器，推荐全国用户使用。）：
• deb edgy main restricted universe multiverse
  deb edgy-security main restricted universe multiverse
  deb edgy-updates main restricted universe multiverse
  deb edgy-backports main restricted universe multiverse
  deb edgy-proposed main restricted universe multiverse
  deb-src edgy main restricted universe multiverse
  deb-src edgy-security main restricted universe multiverse
  deb-src edgy-updates main restricted universe multiverse
  deb-src edgy-backports main restricted universe multiverse
  deb-src edgy-proposed main restricted universe multiverse
  deb edgy main restricted universe multiverse
  • 上海市 上海交通大学 更新服务器（教育网，推荐校园网和网通用户使用。）：
• deb edgy main multiverse restricted universe
  deb edgy-backports main multiverse restricted universe
  deb edgy-proposed main multiverse restricted universe
  deb edgy-security main multiverse restricted universe
  deb edgy-updates main multiverse restricted universe
  deb-src edgy main multiverse restricted universe
  deb-src edgy-backports main multiverse restricted universe
  deb-src edgy-proposed main multiverse restricted universe
  deb-src edgy-security main multiverse restricted universe
  deb-src edgy-updates main multiverse restricted universe
  deb edgy main multiverse restricted universe
  • 北京市清华大学 更新服务器（教育网，推荐校园网和网通用户使用。)：
• deb edgy main multiverse restricted universe
  deb edgy-backports main multiverse restricted universe
  deb edgy-proposed main multiverse restricted universe
  deb edgy-security main multiverse restricted universe
  deb edgy-updates main multiverse restricted universe
  deb-src edgy main multiverse restricted universe
  deb-src edgy-backports main multiverse restricted universe
  deb-src edgy-proposed main multiverse restricted universe
  deb-src edgy-security main multiverse restricted universe
  deb-src edgy-updates main multiverse restricted universe
  deb edgy main multiverse restricted universe
  • 中国 台湾省台湾大学 更新服务器（推荐网通用户使用，电信PING平均响应速度41MS。）
• deb edgy main restricted universe multiverse
  deb-src edgy main restricted universe multiverse
  deb edgy-updates main restricted universe multiverse
  deb-src edgy-updates main restricted universe multiverse
  deb edgy-backports main restricted universe multiverse
  deb-src edgy-backports main restricted universe multiverse
  deb edgy-security main restricted universe multiverse
  deb-src edgy-security main restricted universe multiverse
  deb edgy-proposed main multiverse restricted universe
  deb-src edgy-proposed main restricted universe multiverse
  deb edgy main multiverse restricted universe
  • Mirror.vmmatrix.net 更新服务器（上海市电信，推荐电信网通用户使用。）:
• deb edgy main restricted universe multiverse
  deb-src edgy main restricted universe multiverse
  deb edgy-updates main restricted universe multiverse
  deb-src edgy-updates main restricted universe multiverse
  deb edgy-backports main restricted universe multiverse
  deb-src edgy-backports main restricted universe multiverse
  deb edgy-security main restricted universe multiverse
  deb-src edgy-security main restricted universe multiverse
  deb edgy-proposed main multiverse restricted universe
  deb-src edgy-proposed main restricted universe multiverse
  deb edgy main multiverse restricted universe
  • ubuntu.cnsite.org 更新服务器 (福建省福州市 电信):
• deb edgy main restricted universe multiverse
  deb-src edgy main restricted universe multiverse
  deb edgy-updates main restricted universe multiverse
  deb-src edgy-updates main restricted universe multiverse
  deb edgy-backports main restricted universe multiverse
  deb-src edgy-backports main restricted universe multiverse
  deb edgy-security main restricted universe multiverse
  deb-src edgy-security main restricted universe multiverse
  deb edgy-proposed main multiverse restricted universe
  deb-src edgy-proposed main restricted universe multiverse
  deb edgy main multiverse restricted universe

  • 到以下网址可以自定义产生若干源： 以下网址有极其全面的源，以供补充：http://italy.copybase.ch/blog/lista-repository-sourceslist-ottimizzata-per-ubuntu-kubuntu-linux/

• 保存编辑好的文件，执行以下命令更新。
• sudo apt-get update
  sudo apt-get dist-upgrade

传说中的中国科技大学 5M/s
deb feisty main restricted universe multiverse
deb feisty-backports restricted universe multiverse
deb feisty-proposed main restricted universe multiverse
deb feisty-security main restricted universe multiverse
deb feisty-updates main restricted universe multiverse
deb-src feisty main restricted universe multiverse
deb-src feisty-backports main restricted universe multiverse
deb-src feisty-proposed main restricted universe multiverse
deb-src feisty-security main restricted universe multiverse
deb-src feisty-updates main restricted universe multiverse

#传说中的北京交大 速度 2M/s
deb feisty main restricted universe multiverse
deb feisty-updates main restricted universe multiverse
deb feisty-security main restricted universe multiverse
deb feisty-backports main restricted universe multiverse

#传说中的上海交通大学，年初硬盘挂了，现在貌似又能用了，500k/s 最热门的源之一
deb feisty main multiverse restricted universe
deb feisty-backports main multiverse restricted universe
deb feisty-proposed main multiverse restricted universe
deb feisty-security main multiverse restricted universe
deb feisty-updates main multiverse restricted universe
deb feisty main multiverse restricted universe
deb-src feisty main multiverse restricted universe
deb-src feisty-backports main multiverse restricted universe
deb-src feisty-proposed main multiverse restricted universe
deb-src feisty-security main multiverse restricted universe
deb-src feisty-updates main multiverse restricted universe