Centos 7误删Yum，如何补救？？？

1. 查看centos 的版本号

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1	cat /etc/redhat-release

2. 进入阿里云源站地址：http://mirrors.aliyun.com/  找到对应的版本号

 

3.下载相应的yum包

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1 2 3

wget  https://mirrors.aliyun.com/centos/7.7.1908/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm wget https://mirrors.aliyun.com/centos/7.7.1908/os/x86_64/Packages/yum-3.4.3-163.el7.centos.noarch.rpm wget https://mirrors.aliyun.com/centos/7.7.1908/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpm

4. 执行下面命令

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1 2	rpm -ivh  yum-metadata-parser-1.1.4-10.el7.x86_64.rpm rpm -ivh yum-3.4.3-163.el7.centos.noarch.rpm  yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpm

5. 测试