Centos7安装之后,无法使用ifconfig(找不到命令)运行yum install provides再安装net-tools即可yum install net-tools没有网,下载rpm文件net-tools-2.0-0.22.20131004git.el7.x86_64.rpmhttps://centos.pkgs.org/7/centos-x86_64/net-tools-2.0-0.22.20131004git.el7.x86_64.rpm.html