Centos7.6如何更换软件源

首先连接SSH终端教程地址：https://hmyun.com.cn/news/detail/support/54

第一步执行
sudo cp /etc/yum.repos.d/*.repo /etc/yum.repos.d/backup/
备份原软件源

第二步执行
sudo yum clean all
清除yum缓存

第三步执行
sudo vi /etc/yum.repos.d/CentOS-Base.repo

按i 进入输入模式

删除全部内容

我们拿清华源来做演示

[base]  
name=CentOS-$releasever - Base - mirrors.tuna.tsinghua.edu.cn  
baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/  
gpgcheck=1  
gpgkey=http://mirrors.tuna.tsinghua.edu.cn/centos/RPM-GPG-KEY-CentOS-7  
  
#released updates   
[updates]  
name=CentOS-$releasever - Updates - mirrors.tuna.tsinghua.edu.cn  
baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/updates/$basearch/  
gpgcheck=1  
gpgkey=http://mirrors.tuna.tsinghua.edu.cn/centos/RPM-GPG-KEY-CentOS-7  
  
#additional packages that may be useful  
[extras]  
name=CentOS-$releasever - Extras - mirrors.tuna.tsinghua.edu.cn  
baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/  
gpgcheck=1  
gpgkey=http://mirrors.tuna.tsinghua.edu.cn/centos/RPM-GPG-KEY-CentOS-7  
  
#additional packages that extend functionality of existing packages  
[centosplus]  
name=CentOS-$releasever - Plus - mirrors.tuna.tsinghua.edu.cn  
baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/centosplus/$basearch/  
gpgcheck=1  
enabled=0  
gpgkey=http://mirrors.tuna.tsinghua.edu.cn/centos/RPM-GPG-KEY-CentOS-7

复制进入 按esc 退出输入模式 输入:wq退出 vi 使用 yum install wget 试试是否有效 有效即可