Connect an embedded E9 Board to a laptop with an Internet connection through a network cable

I recently installed an Ubuntu system on my E9 board, but I didn't buy a Wi-Fi extension module. I want to connect it to the Internet! A laptop (win7) that can be connected to the Internet, and an E9 board connects to my laptop through a network cable! Then, perform the following operations!

Then enter the following content in the E9 Ubuntu terminal to set the machine to automatically obtain the IP Address:

$ Sudo dhclient-r // release IP
$ Sudo dhclient // obtain the IP address

OK, so that E9 can be connected to the Internet through a network cable !!

Connect an embedded E9 Board to a laptop with an Internet connection through a network cable