Vmware 安装CentOS7后替换yum源

Vmware 安装CentOS7后替换yum源

cd /etc/yum.repos.d/
mv  CentOS-Base.repo  CentOS-Base.repo.bak
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
mv CentOS7-Base-163.repo CentOS-Base.repo
yum clean all
yum makecache
yum install epel-release

报错Another app is currently holding the yum lock; waiting for it to exit...的解决办法
rm -f /var/run/yum.pid

检查centos的版本：

[root@shuimo usr]# cat /etc/centos-release
CentOS Linux release 7.4.1708 (Core) 

设置不休眠

applications — system tools —setting —power –设置blank 为never。