The following script, named /usr/local/bin/pinga.sh , emits a beep in case of packet loss (host or link down) and 3 short beeps when host/link is restored.
Just call pinga.sh www.creasol.it to monitor the host www.creasol.it , or pinga 192.168.1.123 to monitor the IP address 192.168.1.123.
Script can be downloaded from https://docs.creasol.it/pinga.sh