For scanning my subnet using my IP address, I need to run the following command
nmap -sn 192.168.100.*
I want to extend this functionality such that I don't have to manually specify the first three parts of the IP range myself. I came up with this rough solution.
ip=$( hostname -I | awk '{print $1}' | awk -F. '{print $1; print $2; print $3}' ORS="."; echo -n "*");
nmap -sn $ip
Is there a more cleaner way of achieving the same?