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etc/functions: Add a function to generate random MAC address

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Thierry Laurion 2022-04-29 10:24:02 -04:00
parent fb5cfd5cc2
commit 37a343a49c
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1 changed files with 6 additions and 0 deletions
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6
initrd/etc/functions
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@ -374,3 +374,9 @@ print_battery_charge()
echo "$battery_charge"
fi
}
generate_random_mac_address()
{
#Borrowed from https://stackoverflow.com/questions/42660218/bash-generate-random-mac-address-unicast
hexdump -n 6 -ve '1/1 "%.2x "' /dev/urandom | awk -v a="2,6,a,e" -v r="$RANDOM" 'BEGIN{srand(r);}NR==1{split(a,b,",");r=int(rand()*4+1);printf "%s%s:%s:%s:%s:%s:%s\n",substr($1,0,1),b[r],$2,$3,$4,$5,$6}'
}