Linux下yum install報錯Error: Package:

重新下載對應centos-x.repo解決:

cd /etc/yum.repos.d/
CentOS-Base.repo CentOS-Base.repo.bak
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
sed -i  's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo
yum repolist