Using shell script to ping all IPs

$ i=1
$ while [ $i -lt 256 ]; do i=$(($i+1)) ; ping -c 3 192.168.0.$i; done

But if you have nmap installed:

$ nmap -sP 192.168.0.*
or
$ nmap -sn 192.168.0.0/24

Source: https://stackoverflow.com/questions/13669585/how-to-get-a-list-of-all-valid-ip-addresses-in-a-local-network

Postgresql Client for Microcontroller

https://github.com/ethanak/SimplePgSQL