摘要： cd /etc/yum.repos.d/ mkdir bak mv CentOS-Base.repo ./bak/ wget http://mirrors.163.com/.help/CentOS7-Base-163.repo yum install epel-release sed -e 's!^ 阅读全文

摘要： A机器免密登陆B机器 [root@ServerA ~]# ssh-copy-id ServerB /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" /usr/bin/ssh-co 阅读全文