查看ubuntu 14.04的网关和DNS

root@ubuntu:~# nm-tool

NetworkManager Tool

State: connected (global)

- Device: eth0  [自动以太网] ----------------------------------------------
  Type:              Wired
  Driver:            e1000
  State:             connected
  Default:           yes
  HW Address:        00:0C:29:3D:B3:0A

  Capabilities:
    Carrier Detect:  yes
    Speed:           1000 Mb/s

  Wired Properties
    Carrier:         on

  IPv4 Settings:
    Address:         10.111.131.66
    Prefix:          24 (255.255.255.0)
    Gateway:         10.111.131.1

    DNS:             172.16.202.5