首先用 ifconfig 命令获取有关网卡详细
l@l:~$ ifconfig
enp4s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.25 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 240e:342:7c8e:d700:226a:8aff:fe45:566a prefixlen 64 scopeid 0x0<global>
inet6 fe80::226a:8aff:fe45:566a prefixlen 64 scopeid 0x20<link>
ether 20:6a:8a:45:56:6a txqueuelen 1000 (以太网)
RX packets 885897 bytes 1230937892 (1.2 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 439147 bytes 110186300 (110.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 19
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (本地环回)
RX packets 215339 bytes 68532494 (68.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 215339 bytes 68532494 (68.5 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp3s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 20:7c:8f:6c:09:d5 txqueuelen 1000 (以太网)
RX packets 587055 bytes 819022651 (819.0 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 320576 bytes 34849259 (34.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
这里看到两个接口以太网无线网
#以太网 enp4s0f0
#mac 20:6a:8a:45:56:6a
#无线 wlp3s0
#mac 20:7c:8f:6c:09:d5
#然后这样操作
sudo /etc/init.d/networking stop
sudo ifconfig enp4s0f0 hw ether [这里填写你要的mac地址，不要括号直接命令后面填写]
sudo /etc/init.d/networking start
#重启一下网络
#这样做重启计算机就会失效，这正是我想要的，一个什么灯的软件免费送500mb高速流量，他是通过检测你的硬件地址来记录的，
#用完了修改一下mac硬件地址，从新获得500mb，就是麻烦点，可以无限的用下去！