一、虚拟机联网配置命令1.进入网卡配置目录cd /etc/sysconfig/network-scripts/2.查看网卡配置文件ls3.编辑网卡配置文件vim ifcfg-ens33需修改配置项ONBOOTyes BOOTPROTOdhcp4.停止并禁用 NetworkManager 服务systemctl stop NetworkManager systemctl disable NetworkManager5.重启 network 服务systemctl restart network6.查看 network 服务状态systemctl status network7.验证网络ip addr ping www.baidu.com -c 3二、yum 源配置与软件管理命令1.下载阿里云 yum 源curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo2.清理yum缓存yum clean all3.重建yum缓存yum makecache4.查看yum源列表yum repolist5.安装软件yum install 软件名 -y6.卸载软件yum remove 软件名 -y7.搜索软件yum search 关键词8.查看软件信息yum info 软件名9.查看已安装软件yum list installed