Centos7本地yum源更换阿里云 CentOS 7系统更换yum源是系统管理中常见的一项操作，通常是为了提高软件包的下载速度，或者获取更稳定、可靠的软件包。在进行yum源的更换之前，我们首先需要备份默认的yum源，以便在需要的时候能够还原系统。接下来，我们将详细介绍如何备份默认的yum源、下载阿里云yum源、修改repo文件中的链接、清理并重新生成yum缓存、以及使用新的yum源升级包。CentOS7的yum源默认是国外的源，相较于国内源，网络连接不够稳定，下载速度较慢，因此我们常常把下载好的CentOS7换源为国内的yum源。本篇文章将介绍如何更换CentOS7的yum源为国内yum源，以阿里云的源为例。注:6.30之后centos7不更新本地仓库源有问题1、备份默认的yum源cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup2.下载阿里云的 CentOS-Base.repo 文件wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo如果无法下载，就手工下载并自行重命名，然后上传到目录 /etc/yum.repos.d/3.清除缓存并生成新的缓存yum clean all yum makecache4.更新系统yum update

Ubuntu 23.04、22.04、18.04国内源 配置文件说明Ubuntu配置文件位置：/etc/apt/sources.list需要用root权限：sudo vi /etc/apt/sources.list2种修改方式1）把原文件中：archive.ubuntu.com，替换为：archive.aliyun.com（或其他更新源网址） 2）直接复制下方的内容，覆盖原文件中的内容即可。 修改完成后，更新本地安装包数据库请选择和系统对应的版本查看系统版本命令：lsb_release -a Distributor ID: Ubuntu Description: Ubuntu 22.04 LTS Release: 22.04 Codename: jammy源地址国内的更新源有多个，几个大互联网公司的源都比较稳定，没什么差别。这里整理的比较主流的、常用的几个LTS版本的更新源。Ubuntu 23.04 (lunar)更新源# aliyun deb http://mirrors.aliyun.com/ubuntu/ lunar main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ lunar main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ lunar-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ lunar-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ lunar-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ lunar-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ lunar-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ lunar-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ lunar-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ lunar-backports main restricted universe multiverse# tsinghua deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-updates main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-backports main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-security main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-security main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-proposed main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ lunar-proposed main restricted universe multiverse# 中科大 deb https://mirrors.ustc.edu.cn/ubuntu/ lunar main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ lunar main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ lunar-updates main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ lunar-updates main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ lunar-backports main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ lunar-backports main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ lunar-security main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ lunar-security main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ lunar-proposed main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ lunar-proposed main restricted universe multiverse# 163 deb http://mirrors.163.com/ubuntu/ lunar main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ lunar-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ lunar-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ lunar-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ lunar-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ lunar main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ lunar-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ lunar-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ lunar-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ lunar-backports main restricted universe multiverseUbuntu 22.04 (jammy)更新源 # aliyun deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse# tsinghua deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse# 中科大 deb https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse# 163 deb http://mirrors.163.com/ubuntu/ jammy main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-backports main restricted universe multiverseubuntu 20.04(focal) 更新源# aliyun deb https://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse# 中科大 deb https://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse# tsinghua deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse # 163, netease deb http://mirrors.163.com/ubuntu/ focal main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ focal-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ focal-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ focal-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ focal main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ focal-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ focal-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ focal-backports main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ focal-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ focal-proposed main restricted universe multiverse# Ubuntu 20.04自带sources.list # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://archive.ubuntu.com/ubuntu/ focal main restricted # deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted # deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main restricted ## N.B. 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/ focal universe # deb-src http://archive.ubuntu.com/ubuntu/ focal universe deb http://archive.ubuntu.com/ubuntu/ focal-updates universe # deb-src http://archive.ubuntu.com/ubuntu/ focal-updates universe ## N.B. 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/ focal multiverse # deb-src http://archive.ubuntu.com/ubuntu/ focal multiverse deb http://archive.ubuntu.com/ubuntu/ focal-updates multiverse # deb-src http://archive.ubuntu.com/ubuntu/ focal-updates multiverse ## N.B. 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/ focal-backports main restricted universe multiverse # deb-src http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe 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 focal partner # deb-src http://archive.canonical.com/ubuntu focal partner deb http://security.ubuntu.com/ubuntu/ focal-security main restricted # deb-src http://security.ubuntu.com/ubuntu/ focal-security main restricted deb http://security.ubuntu.com/ubuntu/ focal-security universe # deb-src http://security.ubuntu.com/ubuntu/ focal-security universe deb http://security.ubuntu.com/ubuntu/ focal-security multiverse # deb-src http://security.ubuntu.com/ubuntu/ focal-security multiverseubuntu 18.04(bionic) 更新源 # aliyun deb https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src https://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse# 中科大 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 deb http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse # tsinghua university 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 restricte更新apt-get update apt-get upgrade apt-get install <packagename>