leiless/gen_rand_mac.sh

Created September 29, 2021 08:07

Star (0) You must be signed in to star a gist
Fork (0) You must be signed in to fork a gist

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/leiless/ec62fa42aa63db8aa7e9f2f69686ec5c.js"></script>
Save leiless/ec62fa42aa63db8aa7e9f2f69686ec5c to your computer and use it in GitHub Desktop.

Download ZIP

Linux shell - how to generate random MAC address

Raw

gen_rand_mac.sh

	#!/bin/bash

	set -eufo pipefail
	#set -x

	tr -dc a-f0-9 < /dev/urandom \| head -c 12 \| sed -r 's/(..)/\1:/g;s/:$//1'

Author

leiless commented Sep 29, 2021 •

edited

Loading

Example output

8e:04:2a:54:fd:ef
62:9e:0d:20:f8:88
01:4d:c3:72:d3:1b
bf:11:a9:bb:00:dd

NOTE

You need to turn off pipefail when assign result of tr -dc a-f0-9 < /dev/urandom | head -c 12 | sed -r 's/(..)/\1:/g;s/:$//1' into a variable.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment