How to obtain MAC address of WiFi network interface?

Windows system

On Windows, you can obtain the MAC address via the Command Prompt:

1. Open the Start menu, search for 'cmd' or 'Command Prompt', and open it.
2. In the Command Prompt window, enter the following command:

   shell
   

ipconfig /all

shell
3. Press Enter, and the system will list information for all network adapters. Locate the section for your WiFi adapter, typically labeled 'Wireless LAN adapter', where you will find 'Physical Address', which is the MAC address.

### macOS system

On macOS, you can find the MAC address through System Preferences or by using the Terminal:

1. Open System Preferences.
2. Click on 'Network'.
3. Select WiFi from the left sidebar.
4. Click the 'Advanced' button.
5. In the pop-up window, navigate to the 'Hardware' tab, where the MAC address is displayed.

Alternatively, using Terminal:

1. Open the Terminal application.
2. Enter the following command:

ifconfig en0

shell
Note: 'en0' is typically the wireless interface, but may vary based on your system configuration.
3. Look for the 'ether' line, followed by your MAC address.

### Linux system

On Linux, you can obtain the MAC address via the terminal:

1. Open the terminal.
2. Enter one of the following commands:

ip link

shell
or

ifconfig

shell
3. These commands list detailed information for all network interfaces. Identify the WiFi-related interface (commonly named wlan0 or similar), and check the `link/ether` field, where the value following it is the MAC address.

### Example

For instance, if I am using Windows to find my WiFi adapter's MAC address, I would open the Command Prompt, enter `ipconfig /all`, and locate the 'Wireless LAN adapter' section. There, I would see a line such as 'Physical Address. . . . . . . . . : 00-1B-44-11-3A-B7', which is the MAC address of my WiFi interface.