linux 下查mac

sh-4.1# cat /sys/class/net/eth0/address
4c:cc:6a::9a:
sh-4.1# ifconfig -a |grep 'HWaddr'|awk '{print $5}'
4C:CC:6A::9A:

查看连接到本机的远端ip的mac地址：

sh-4.1# cat /proc/net/arp
IP address       HW type     Flags       HW address            Mask     Device
10.100.0.195     0x1         0x2         1c:::f3:af:0f     *        eth0
10.100.0.183     0x1         0x2         :::::     *        eth0
10.100.0.235     0x1         0x2         ac:c1:ee:c0::     *        eth0
10.100.0.127     0x1         0x2         ::ba:ee:e8:f0     *        eth0
10.100.0.50      0x1         0x2         2c:5b:b8:a7:8c:     *        eth0