<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[2402_83094821的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/2402_83094821</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; 2402_83094821]]></copyright><item><title><![CDATA[centos7yum已失效，解决方法]]></title><link>https://blog.youkuaiyun.com/2402_83094821/article/details/146455901</link><guid>https://blog.youkuaiyun.com/2402_83094821/article/details/146455901</guid><author>2402_83094821</author><pubDate>Sun, 23 Mar 2025 14:31:10 +0800</pubDate><description><![CDATA[1. 备份旧源：可以在  /etc/yum.repos.d/  目录下创建一个bak目录，如  mkdir -p /etc/yum.repos.d/bak  ，然后将该目录中原有的  .repo  源配置文件移动至bak目录中，即  mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak/。1. 打开原配置文件：使用命令  sudo vi /etc/yum.repos.d/CentOS-Base.repo  打开文件。方法二：备份并下载新配置文件。]]></description><category></category></item></channel></rss>