1. 列出启用网络设备的所有信息:

ifconfig

2. 将网络设备设置为启用或者不启用

  不启用设备eth0

ifconfig eth0 down

  启用设备eth0: Will bring eth0 up if it is currently down.

ifup eth0

  停止设备eth0:Will bring eth0 down if it is currently up.

ifdown eth0