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Every computer has a specific unique Media Access Control address (MAC), which is built in the computer’s network card. The unique Media Access Control (MAC) address is usually used to identify and distinguish between computers. There are so many uses of MAC Address. You can change this MAC address manually in OS X. There are also many reasons you might want to change your Mac OS X MAC address. 

You'd be thinking this might be a very hard or long process to achieve. Don't worry, it is quite easy to change MAC address if you can follow the guide available in this article.

However, this is just a simple guide on how to find and change Mac OS X MAC Address. 

Follow the below steps:

Find OS X MAC Address

First to do is to know how to find your Mac OS X MAC address.

You can quickly and easily find your OS X MAC Address from the menu bar. Just press and hold Option key and click on the Wi-Fi icon seen in the menu bar. A drop-down menu will show up with some options, among which you can see first two options as Interface Name and Address.

The address is sort of mixture of alphabets and numbers separated by colons; this is the physical MAC address of the OS X. This address may be changed; at this time, you can type in the below command in terminal and check the address your computer is using to communicate.

ifconfig en1 | grep ether

This will supply your MAC address for the hardware interface en1; this interface is used for Wi-Fi in most Macs.

You can check which interface is used for Wi-Fi, by pressing and holding the Option key and clicking the Wi-Fi icon in the menu bar. This action will show you which device you are using to access the internet.

Change OS X MAC Address

If you want to change your MAC address, you can change it by setting a new one. 

Enter the below command in terminal

sudo ifconfig en1 ether aa:bb:cc:dd:ee:ff

Then enter your system password when prompted.

This command will set the MAC address for en1.

Get a Random OS X MAC Address 

If you are concerned about privacy, you can randomize your MAC address with below command. Type in the command as shown below:

openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//' | xargs sudo ifconfig en1 ether

Then enter your system password when prompted.

You get a new MAC address for en1 every time you run the abovecommand. 

Note: This is not a permanent thing as the changes made from both commands will revert to its original condition when you restart your Mac. Also note that once you change your MAC address, there can be some kind of network problems. It is always recommended to restart your Wi-Fi after editing MAC address.

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