Ubuntu如何正确的更换阿里镜像源

阿里镜像源"/>

Ubuntu如何正确的更换阿里镜像源

linux的其他更新源我没有研究过，Ubuntu看过还是有点儿发现的。
首先阿里的Ubuntu源地址为 /
这里列出Ubuntu20.04 代号为focal的阿里镜像源

deb / focal main restricted universe multiverse
deb-src / focal main restricted universe multiversedeb / focal-security main restricted universe multiverse
deb-src / focal-security main restricted universe multiversedeb / focal-updates main restricted universe multiverse
deb-src / focal-updates main restricted universe multiversedeb / focal-proposed main restricted universe multiverse
deb-src / focal-proposed main restricted universe multiversedeb / focal-backports main restricted universe multiverse
deb-src / focal-backports main restricted universe multiverse

通过观察发现后面的四个单词其实就是四个包，而那个focal其实就是版本代号。通过lsb_release -c命令可以查看版本代号

当然，还可以使用命令：lsb_release -a 查看全部信息

Distributor ID:	Ubuntu  //类别
Description:	Ubuntu 20.04.2 LTS  //20年4月发布的稳定版本，LTS代表Long Term Support （长期支持版本，周期一般为三到五年）Release:	20.04      //发行版本号
Codename:	focal   //Ubuntu的版本代号名称（上面说的代号名称就是这个）

另外，可以通过cat /proc/version查看版本号等

Linux version 5.8.0-43-generic (buildd@lcy01-amd64-018) //linux内核版本号
(gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0  //gcc版本号(Ubuntu 9.3.0-17ubuntu1~20.04)   //Ubuntu发行版本号20.04
GNU ld (GNU Binutils for Ubuntu) 2.34) 
#49~20.04.1-Ubuntu SMP Fri Feb 5 09:57:56 UTC 2021   //这两个不知道什么意思，知道的大佬可以评论告知

也可以通过uname -a查看

最后，列出一些版本的代号以及一些相关阿里源

Ubuntu 12.04 (LTS)代号为precise。
Ubuntu 14.04 (LTS)代号为trusty。
Ubuntu 15.04 代号为vivid。
Ubuntu 15.10 代号为wily。
Ubuntu 16.04 (LTS)代号为xenial

xenial的16.04版本的如下

 deb-src  xenial main restricted #Added by software-propertiesdeb / xenial main restricteddeb-src / xenial main restricted multiverse universe #Added by software-propertiesdeb / xenial-updates main restricteddeb-src / xenial-updates main restricted multiverse universe #Added by software-propertiesdeb / xenial universedeb / xenial-updates universedeb / xenial multiversedeb / xenial-updates multiversedeb / xenial-backports main restricted universe multiversedeb-src / xenial-backports main restricted universe multiverse #Added by software-propertiesdeb  xenial partnerdeb-src  xenial partnerdeb / xenial-security main restricteddeb-src / xenial-security main restricted multiverse universe #Added by software-propertiesdeb / xenial-security universedeb / xenial-security multiverse

bionic的18.04版本如下

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