ip [ OPTIONS ] OBJECT { COMMAND | help }
      OBJECT := { link | address | route}

1）link: network device.
            list 用ip命令顯示網絡設備的運行狀態

            show [dev IFace]指定接口顯示

            [up]僅顯示處於激活狀態的接口

         set dev IFACE 可設置屬性的UP/DOWN
 

 2) addr:  (address)
          - protocol (IP or IPv6) address on a device.
          ip addr {add|del} IFADDR dev IFNAME
                                    添加|刪除    地址       設備名

        ip address {save|flush} [ dev IFNAME ] [ scope SCOPE-ID ][ label LABEL ] [up]
                flush:清空
                        [label LABEL] 添加地址時指明網卡別名
                        [ scope {global|link|host}] 指明作用域
                        global：全局有效（默認） link：僅鏈接有效  host：本機有效
                        IFADDR := [ broadcast ADDR ] 指明廣播地址

        ip address [ show [ dev IFNAME ] [ label LABEL ] [up] ]
 

    3）route: routing table entry.
        ip route { add | del } ROUTE
        (1) ip route add
                    添加路由：ip route add TARGET via GW dev IFace src source_ip
                         TARGET: 主機路由  ip
                                         網絡路由 network/mask

添加網關：ip route add default via GW dev IFACE

     (2) ip route delete
         刪除路由: ip route del TARGET

   (3) ip route flush 清空
             [dev IFACE]

配置Linux網絡屬性：ip命令