ifconfig
eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:26:2d:fe:8f:fc txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xf2600000-f2620000
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 0 (Local Loopback)
RX packets 5282 bytes 268948 (262.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5282 bytes 268948 (262.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.32.181.83 netmask 255.255.254.0 broadcast 10.32.181.255
inet6 fe80::226:c6ff:feca:adee prefixlen 64 scopeid 0x20<link>
ether 00:26:c6:ca:ad:ee txqueuelen 1000 (Ethernet)
RX packets 535461 bytes 609737894 (581.4 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 353078 bytes 46949958 (44.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0:网卡的代号
mtu: Maximum Trasmission Unit 最大传输单元(bytes),表示一次能够传输的最大数据包
ether 00:26:2d:fe:8f:fc:mac地址,mac地址是固化在硬件里的,可以认为是不可变的。
有关mac地址与ip地址的区别,可参考:http://www.arpun.com/article/918.html
netmask:子网掩码
broadcast:广播地址
RX:网络由激活到目前为止的接收情形
TX:网络由激活到目前为止的传送情形
lo:表示为『内部循环 IP 』的网络卡代号,请注意,这个虚拟的 interface 一定要存在!