一、配置yum源
1.备份当前yum源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2.下载新的CentOS-Base.repo 到/etc/yum.repos.d/
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
3.清空并生成缓存
yum clean allyum makecache
参考:CentOS报错:Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&i_centos 7 could not retrieve mirrorlist-CSDN博客e
二、yum命令
yum list:显示所有可用包
yum info:显示所有可以包的详情
yum search:模糊查询
yum whatprovides:精确查询
yum install:安装
yum update 升级
yum remove:卸载
yum history:查找yum历史操作
yum history info+序列号:查看某次操作的详细信息
三、更新yum源
sudo yum update
四、安装需要的依赖
示例:
sudo yum install tcl