获取linux shell脚本变量的接口名称

Question

I would like to store an interface name into a variable in linux shell script. I found a solution to do this via "grep" command and the IP-Address. My problem is that my interface doesn't have an IP-Address at this moment.

The interface name always begins with "enx" and the MAC-Address like "enxb2240be99fc3" while the MAC-Address can change every reboot.

Is there a solution to get this interface name into a shell script variable?

Answer 1

iname=$(ip -o link show | sed -rn '/^[0-9]+: en/{s/.: ([^:]*):.*/\1/p}')

将接口名称保存到变量iname

Answer 2

ip addr show | awk '/inet.*brd/{print $NF}'

this is also works,check it...

Answer 3

iname=$(ls /sys/class/net | grep -i enx)
echo $iname