In case, if you want to get the details of particular interface, then you can replace the * with your interface name:Ĭommand: cat /sys/class/net/ens33/addressĬommand: cat /sys/class/net/*/uevent /sys/class/net/*/address | grep -v IFINDEX | column | sed ‘s/INTERFACE=//’ 4. If you just need to pull MAC addresses for a system and pair to an interface, you can easily get it done via below Bash command. Or in simple way, you can also use the following command:Ĭommand: ifconfig | grep ether | cut -d ” ” -f 10Ĭommand: ifconfig | grep “ether*” | tr -d ‘ ‘ | tr -d ‘ ’ | cut -c 6-22

With the help of some regular expressions, you can also find the MAC addressĬommand: ip a | grep ether | cut -d ” ” -f6Īlternatively, you can also try the below command:Ĭommand: ip link show ens33 | grep link/ether | awk ‘’ In below screenshot, we have highlighted our MAC address for the ens33 interface. Start by opening a terminal and using the following ip command to view information for all installed network interfaces. In this article, you will learn how to obtain the MAC address on a Ubuntu Linux system via many ways: Unlike IP addresses, which can change frequently and easily, MAC addresses are permanently tied to the hardware. To reiterate, this is not going to work in op's usecase, but can and does work in my usecase.Every network interface has its own unique MAC address. This can be changed to wait for the mac before calling next() and block non-whitelisted requests. That script cached the ip, and could quickly verify the validity of the machine at that point using something like: ping -c 1 -w 2 -q $homeip > /dev/nullĮxecFile(`resolveip`,, (error, stdout, stderr) => '`) However, doing this takes a long time (Doing so on a net with subnet 255.255.192.0 can take > 30s!) I previously had written a script to seek out a specific computer known to be on a network and known by its mac address. As per other answers, this will not work under all conditions, but it does work under a condition as detailed below My Usecase This is too specific for the original question, but someone else may find this useful.

Linux get mac address using javascript