关键词：
查看当前 Ubuntu 镜像源
less /etc/apt/sources.list
less /etc/apt/sources.list文件部分内容：
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://cn.archive.ubuntu.com/ubuntu focal main restricted
# deb-src http://cn.archive.ubuntu.com/ubuntu focal main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://cn.archive.ubuntu.com/ubuntu focal-updates main restricted
# deb-src http://cn.archive.ubuntu.com/ubuntu focal-updates main restricted
...
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://cn.archive.ubuntu.com/ubuntu focal main restricted # deb-src http://cn.archive.ubuntu.com/ubuntu focal main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://cn.archive.ubuntu.com/ubuntu focal-updates main restricted # deb-src http://cn.archive.ubuntu.com/ubuntu focal-updates main restricted ...
通过查看地址可以看到默认使用的是 Ubuntu 官方镜像源 http://cn.archive.ubuntu.com 。按 Q 键可以退出 less 模式!
备份当前镜像源
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
修改当前镜像源
vim /etc/apt/sources.list
# 打开文件不要做任何操作，直接输入 ggdG 清空文件，注意 G 是大写
ggdG
vim /etc/apt/sources.list
# 打开文件不要做任何操作，直接输入 ggdG 清空文件，注意 G 是大写
ggdG清空文件后，然后复制下镜像源（根据自己实际的版本）：
-
Ubuntu 14.04 LTS
deb https://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse ## Not recommended # deb https://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse # deb-src https://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
- ubuntu 16.04
deb http://mirrors.aliyun.com/ubuntu/ xenial main deb-src http://mirrors.aliyun.com/ubuntu/ xenial main deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main deb http://mirrors.aliyun.com/ubuntu/ xenial universe deb-src http://mirrors.aliyun.com/ubuntu/ xenial universe deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates universe deb http://mirrors.aliyun.com/ubuntu/ xenial-security main deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security universe
- ubuntu 18.04(bionic)
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
- ubuntu 20.04(focal)
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
按 Esc 切换到命令模式，然后输入 wq 保存并退出。
更新镜像源
sudo apt-get update
sudo apt-get upgrade ## optional
sudo apt-get update sudo apt-get upgrade ## optional
控制台部分输出内容：
Get:1 http://mirrors.aliyun.com/ubuntu focal InRelease [265 kB] Get:2 http://mirrors.aliyun.com/ubuntu focal-security InRelease [109 kB] Get:3 http://mirrors.aliyun.com/ubuntu focal-updates InRelease [114 kB] Get:4 http://mirrors.aliyun.com/ubuntu focal-proposed InRelease [267 kB] Get:5 http://mirrors.aliyun.com/ubuntu focal-backports InRelease [101 kB] Get:6 http://mirrors.aliyun.com/ubuntu focal/restricted Sources [6472 B] Get:7 http://mirrors.aliyun.com/ubuntu focal/multiverse Sources [174 kB] Get:8 http://mirrors.aliyun.com/ubuntu focal/main Sources [847 kB] Get:9 http://mirrors.aliyun.com/ubuntu focal/universe Sources [9707 kB] Get:10 http://mirrors.aliyun.com/ubuntu focal/main amd64 Packages [970 kB] Get:11 http://mirrors.aliyun.com/ubuntu focal/main Translation-en [506 kB] Get:12 http://mirrors.aliyun.com/ubuntu focal/main amd64 c-n-f Metadata [29.5 kB] ...
恭喜替换为阿里云镜像源成功。
参考链接:
https://blog.csdn.net/peng2hui1314/article/details/111504609
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