Youll probably also want to make sure you didnt run the command in an unconnected virtual machine without a network like we did for the purposes of demonstration.

Each computer network interface receives a unique Media Access Control (MAC) address, which explains what device it belongs to.

Users with multiple networking interfaces will end up with more than one address to take a look at.

Youll need to be working on a command line interface to find MAC address information, but you wont need to be logged in as root.

Graphical desktop environment users can usually hold down CtrlAltT to open up a terminal.

Ubuntu Unity users can search for the word terminal on the Dash.

Those using Xfce4 can find it on the Whisker Menu in System Tools, and LXDE, KDE and GNOME Shell users should find it on the menu in the same place.

Method 1: Find MAC Address Numbers with ip link At the prompt, simply type ip link and push enter.

Youll be given a list of MAC address figures and you simply need to look for the name that GNULinux gives to your network adapter.

For instance, you might see wls1:, which probably indicates a Wi-Fi connection that youre working with.

A reference to linkether would point to your Ethernet connection.

Youll quite possibly see more than one of these references if youre on a beefier modern desktop computer or a laptop that youve personally upgraded.

Youll also find linkloopback more than likely, which will consist of all zeros.

For security reasons, our screenshots were taken in a virtual machine, so we only had this adapter.

This one single command is enough to find the answer to your question without any further playing around.

Method 2: Find MAC Address with the ifconfig Command Like with almost everything on the Linux command line, there is more than one way to find MAC address data.

If this command is long and youd like to copy it from this article, then remember that youll need to paste from the Edit menu in your terminal window.

You might instead want to hold down ShiftCtrlV, but the normal CtrlV keyboard shortcut wont work.

As soon as youve run it, youll receive the MAC hardware address for each networking device attached to the system.

You might have only a few on a laptop, while connected routers could ultimately list dozens of different connections if theyre sending packets in many different places.

Theres nothing else to do; you can find MAC address data with a single command.

Youll want to check to make sure that you didnt disable networking, loose a Wi-Fi connection by moving around or unplug an Ethernet cord.

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