Generate and Set Random Valid MAC Address from Command Line on OS

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So after a lot of requests from our users here is a guide about Generate and Set a Random Valid MAC Address from the Command Line in OS X.

We showed you how to generate MAC addresses randomly and then how to go about changing a MAC address in OS X Lion and OS X Mountain Lion, but why are those two separate actions? Using the command line, you can combine the two events in one action to generate a valid MAC and then set it up immediately.

Launch the Terminal and paste the following on a single line:

openssl edge -hex 1 | tr ‘”’| xargs echo “obase = 2; ibase = 16;” | bc | cut -c1-6 | sed ‘s / $ / 00 /’ | xargs echo “obase = 16; ibase = 2;” | bc | sed “s / $ /: $ (openssl rand -hex 5 | sed ‘s /(..)/ 1: / g; s /.$//’ | tr ‘”’) / ”| xargs sudo ifconfig en0 ether

There is no confirmation or output, the MAC address is set immediately, which you can verify with the following command:

ifconfig en0 | grep ether

You will likely need to reconnect to the wireless router after giving the command, and in some cases turn Wi-Fi on and off.

If you plan to use this often, setting up an alias in .bash_profile would be a good idea to avoid cutting and pasting the huge block of text.

Thanks to osmium for the great tip

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Generate and Set a Random Valid MAC Address from the Command Line in OS X: FAQ

Tutorial Summary: Generate and Set a Random Valid MAC Address from the Command Line in OS X

In this guide, we told you about Generate and Set a Random Valid MAC Address from the Command Line in OS X; please read all steps so that you understand Generate and Set a Random Valid MAC Address from the Command Line in OS X in case if you need any assistance from us, then contact us.

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What is actual time in which this method complete?

The time to complete the Generate and Set a Random Valid MAC Address from the Command Line in OS X tutorial is 10+ minutes.

What are the supported Device?

Apple

What are the supported Operating system?

mac OS


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