yum相关

yum使用不了

sudo sed -i 's/https/http/g' /etc/yum.repos.d/epel.repo 
yum install update
#拯救你的repo文件
cd /etc/yum.repos.d/
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache

yum太慢

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache
yum list