Fast and furious ping routine to detect if Internet is accessible or a computer is online.

fastping.sh

#!/bin/bash

cnt=${2:-3}
to=${3:-1}
rcvd=$(set -o pipefail; timeout $to ping -A -s16 -c$cnt -q $1 2> /dev/null | grep received | awk -F', ' '{print $2}' | awk '{print $1}')
if [[ $? != 0 || $cnt != $rcvd ]]; then
	exit 1
fi

Usage:

./fastping.sh HOST [COUNT=3 [TIMEOUT=1]]