Whats the command to find Nic cards serial numbers in linux?

Question

Whats the command to find Nic cards serial numbers in linux ? I tried dmidecode options and lshow

may be I missed some thing

Answer 1

I'm not sure about serial numbers, but lspci gives me the following information about my ethernet card:

04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)

Answer 2

If you haven't mucked with your MAC address since bootup, it will be globally unique. See http://www.coffer.com/mac_info/locate-unix.html

NICs aren't required to have any other serial number than that, and if they do it might not be electronically readable.