iptables -F
selinux关闭 /etc/selinux/config selinux=disable reboot
cat /etc/hosts
mount /dev/cdrom /mnt
/etc/yum.repos.d/
yum list
init 3
ifconfig ethN/fddiN 以太网/光纤
chkconfig NetworkManager on/off
service network restart
ifconfig eth0:1 192.168.153.127
/etc/sysconfig/network-script/
新增网卡后通过setup生成配置文件，然后配置