#!/usr/bin/env bash

# Ping command line options:
#   -c: stop after c answered packages
#   -i: seconds wait interval
#   -q quiet
#   -w: seconds overall deadline

DESTINATION="$1"
SECONDS="2"
RATE_IN_SECONDS="2"
NUMBER_OF_PINGS="1"
INTERVAL="1"

while sleep ${RATE_IN_SECONDS}; do
    ping_output="$(ping -c ${NUMBER_OF_PINGS} -i ${INTERVAL} -q -w ${SECONDS} ${DESTINATION} 2>/dev/null)"
    PING_EXIT_CODE="$?"
    if [ "${PING_EXIT_CODE}" -ne 0 ]; then
        ping_results="$(grep 'packets transmitted.*received.*packet loss.*time' <<< "$ping_output")"
        now="$(date '+%s') $(date)"
        printf "%s %s %s\n" "$now" "$ping_exit_code" "$ping_results"
    fi
done