这篇文章主要介绍Ubuntu12.04如何更新源，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

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使用国外源太慢了，修改为国内源会快很多。这里就为大家分享一下修改方法，需要的朋友可以参考一下

1.sudo gedit /etc/apt/sources.list

编辑你的源列表，将原来的内容全部删除或者做一下备份

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup （备份当前的源列表）

添加下面列表中最适合你的源（注意不要全部添加），选择一个最合适你的即可，复制到你的列表中，然后保存列表。

2.sudo apt-get update 更新源列表信息

可以在运行“sudo apt-get update ”时查看一下错误信息，把不能连接的源删除再重新运行“sudo apt-get update ”。

3.sudo apt-get upgrade 升 级或者用ubuntu自带的更新管理器升级也可

Ubuntu 12.04 源列表：

163源( 选 )：

deb /tupian/20230522/ precise main restricted
deb-src /tupian/20230522/ precise main restricted
deb /tupian/20230522/ precise-updates main restricted
deb-src /tupian/20230522/ precise-updates main restricted
deb /tupian/20230522/ precise universe
deb-src /tupian/20230522/ precise universe
deb /tupian/20230522/ precise-updates universe
deb-src /tupian/20230522/ precise-updates universe
deb /tupian/20230522/ precise multiverse
deb-src /tupian/20230522/ precise multiverse
deb /tupian/20230522/ precise-updates multiverse
deb-src /tupian/20230522/ precise-updates multiverse
deb /tupian/20230522/ precise-backports main restricted universe multiverse
deb-src /tupian/20230522/ precise-backports main restricted universe multiverse
deb /tupian/20230522/ precise-security main restricted
deb-src /tupian/20230522/ precise-security main restricted
deb /tupian/20230522/ precise-security universe
deb-src /tupian/20230522/ precise-security universe
deb /tupian/20230522/ precise-security multiverse
deb-src /tupian/20230522/ precise-security multiverse
deb /tupian/20230522/ precise main
deb-src /tupian/20230522/ precise main

sohu源：

deb http://mirrors.sohu.com/ubuntu/ precise main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise main restricted
deb http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb http://mirrors.sohu.com/ubuntu/ precise universe
deb-src http://mirrors.sohu.com/ubuntu/ precise universe
deb http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb http://mirrors.sohu.com/ubuntu/ precise multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-security main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise-security main restricted
deb http://mirrors.sohu.com/ubuntu/ precise-security universe
deb-src http://mirrors.sohu.com/ubuntu/ precise-security universe
deb http://mirrors.sohu.com/ubuntu/ precise-security multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-security multiverse
deb /tupian/20230522/ precise main
deb-src /tupian/20230522/ precise main

ubuntu.cn99.com源（推荐）：

deb /tupian/20230522/ precise main restricted universe multiverse
deb /tupian/20230522/ precise-updates main restricted universe multiverse
deb /tupian/20230522/ precise-security main restricted universe multiverse
deb /tupian/20230522/ precise-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ precise main restricted universe multiverse

教育网源

如果你是在校大学生，可以使用校园网/教育网，就是用教育网的资源吧，尤其是支持ipv6的，那更新速度就按兆算了。

电子科技大学：

deb http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse

中国科技大学：

deb http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-backports restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse

北京交大：

deb http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe

4、更新源(在终端里敲如下命令)

sudo apt-get update

安装Ubuntu18.04后，使用国外源太慢了，修改为国内源会快很多。

修改阿里源为Ubuntu 18.04默认的源

备份/etc/apt/sources.list
#备份
cp /etc/apt/sources.list /etc/apt/sources.list.bak

在/etc/apt/sources.list文件前面添加如下条目
#添加阿里源

deb /tupian/20230522/ bionic main restricted universe multiverse
deb /tupian/20230522/ bionic-security main restricted universe multiverse
deb /tupian/20230522/ bionic-updates main restricted universe multiverse
deb /tupian/20230522/ bionic-proposed main restricted universe multiverse
deb /tupian/20230522/ bionic-backports main restricted universe multiverse
deb-src /tupian/20230522/ bionic main restricted universe multiverse
deb-src /tupian/20230522/ bionic-security main restricted universe multiverse
deb-src /tupian/20230522/ bionic-updates main restricted universe multiverse
deb-src /tupian/20230522/ bionic-proposed main restricted universe multiverse
deb-src /tupian/20230522/ bionic-backports main restricted universe multiverse

最后执行如下命令更新源
##更新
sudo apt-get update
sudo apt-get upgrade

另外其他几个国内源如下：
中科大源

##中科大源
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

163源

##163源
deb /tupian/20230522/ bionic main restricted universe multiverse
deb /tupian/20230522/ bionic-security main restricted universe multiverse
deb /tupian/20230522/ bionic-updates main restricted universe multiverse
deb /tupian/20230522/ bionic-proposed main restricted universe multiverse
deb /tupian/20230522/ bionic-backports main restricted universe multiverse
deb-src /tupian/20230522/ bionic main restricted universe multiverse
deb-src /tupian/20230522/ bionic-security main restricted universe multiverse
deb-src /tupian/20230522/ bionic-updates main restricted universe multiverse
deb-src /tupian/20230522/ bionic-proposed main restricted universe multiverse
deb-src /tupian/20230522/ bionic-backports main restricted universe multiverse

清华源

##清华源
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

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