Check MAC from log - linux

Question

I currently have a script that checks the MAC address, tt looks like this
"m"|"-m" )
if [ ! -n "$2" ]
then
echo "Enter MAC address"
exit 0
fi
out1=`cat $dhcp_files/* | grep -i "$2" 2>/dev/null`
ip=`cat $dhcp_files/* | grep -i "$2" | awk '{print $8}' | sed s/\;//g 2>/dev/null`
out=` grep -i $ip $shapy/* | awk '{print $8}' 2>/dev/null`
echo -en ''$out1' on '$out' \n'
this is done like that: ./mac_check -m 00:00:00:00:00:00
The result of this script:
host Jon_Rosewelt_6_5 { hardware ethernet 00:1d:4e:b5:d4:10; fixed-address 192.168.101.19; } on eth4
but I would like to do to the script received any form of mac address
aka. ./check_mac -m 001d.4eb5.d410 **or** 001d4eb5d410 **or** 00-1d-4e-b5-d4-10
How can I do that?

Answer 1

With GNU sed and Solaris sed:
echo 001d.4eb5.d410 | sed 's/[^0-9a-f]//g;s/../&:/g;s/:$//'
echo 001d4eb5d410 | sed 's/[^0-9a-f]//g;s/../&:/g;s/:$//'
echo 00-1d-4e-b5-d4-10 | sed 's/[^0-9a-f]//g;s/../&:/g;s/:$//'
echo 00:1d:4e:b5:d4:10 | sed 's/[^0-9a-f]//g;s/../&:/g;s/:$//'
Output:
00:1d:4e:b5:d4:10
00:1d:4e:b5:d4:10
00:1d:4e:b5:d4:10
00:1d:4e:b5:d4:10
With your code:
"m"|"-m" )
mac="$2" # added
if [ ! -n "$mac" ] # changed
then
echo "Enter MAC address"
exit 0
fi
mac="$(echo "$mac" | sed 's/[^0-9a-f]//g;s/../&:/g;s/:$//')" # added
out1=`cat $dhcp_files/* | grep -i "$mac" 2>/dev/null` # changed
ip=`cat $dhcp_files/* | grep -i "$mac" | awk '{print $8}' | sed s/\;//g 2>/dev/null` # changed
out=` grep -i $ip $shapy/* | awk '{print $8}' 2>/dev/null`
echo -en ''$out1' on '$out' \n'