Get IP of Device With Specific MAC Address in Script?

[HarryMuscle]

Is it possible in a script to get the IP address of a device on the network if you know its MAC address?

Thanks,
Harry

 

[RMerlin]

Is it possible in a script to get the IP address of a device on the network if you know its MAC address?

Parse the content of /proc/net/arp .

 

[chongnt]

Is your MAC shown here?

cat /var/lib/misc/dnsmasq.leases

 

[Martinski]

Is it possible in a script to get the IP address of a device on the network if you know its MAC address?

Parse the content of /proc/net/arp .

If choosing this method, keep in mind that in the script you'll have to filter out any ARP cache entries that have the flag=0x0 (3rd entry from the left) which indicates that the entry is currently "incomplete" (i.e. it should be ignored).

For example:

grep -i "AA:BB:CC:DD:EE:FF" /proc/net/arp | awk -F ' ' '{if ($3 != "0x0") {print $1,$4}}'

My 2 cents.