od -An -N10 -x /dev/random | md5sum | sed -r 's/^(.{10}).*$/\1/; s/([0-9a-f]{2})/\1:/g; s/:$//;'

Generat a Random MAC address


2
2010-09-23 00:15:30

10 Alternatives + Submit Alt

  • Original author unknown (I believe off of a wifi hacking forum). Used in conjuction with ifconfig and cron.. can be handy (especially spoofing AP's) Show Sample Output


    17
    MAC=`(date; cat /proc/interrupts) | md5sum | sed -r 's/^(.{10}).*$/\1/; s/([0-9a-f]{2})/\1:/g; s/:$//;'`
    vaporub · 2009-02-16 07:09:43 2
  • Use the following variation for FreeBSD: openssl rand 6 | xxd -p | sed 's/\(..\)/\1:/g; s/:$//'


    15
    openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//'
    putnamhill · 2010-09-23 02:31:12 0
  • Generate a random MAC address with capital letters


    3
    hexdump -n6 -e '/1 ":%02X"' /dev/random|sed s/^://g
    rubo77 · 2015-01-19 03:09:43 0
  • Just increase the 1 at the end if you want to generate more than one. (Alternative to "| head -n N" you could use the -b flag of od: -b $[6*N] Show Sample Output


    2
    od /dev/urandom -w6 -tx1 -An|sed -e 's/ //' -e 's/ /:/g'|head -n 1
    karel1980 · 2011-05-16 15:05:34 1
  • Generates labyrinth-like pattern on UTF-8 terminal in bash. For fun ;) Show Sample Output


    2
    while ( true ) ; do if [ $(expr $RANDOM % 2 ) -eq 0 ] ; then echo -ne "\xE2\x95\xB1" ; else echo -ne "\xE2\x95\xB2" ; fi ; done
    tobi · 2015-01-17 12:46:37 3

What Others Think

macchanger wlan0 -r Actually change the MAC adress of wlan0 Also possible to reset the mac adress to anything you desire and several more options.
houghi · 399 weeks and 3 days ago

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Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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