Or even easier:
ip=$(/sbin/arping -f -I eth0 10.255.255.1 | grep Unicast | awk '{print
substr($5,2,17)}')
This greps for the line with the MAC, then using awk prints out the
5th field (space delimited by default so this is the MAC with the [
and ]), and using substr I carve out the MAC by saying I want the 5th
field ($5), starting at the 2nd character, for 17 characters.
Jacques B.
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