pwp.sh

function pwp() { 
    HOST2PING=${1:-212.77.100.101} 
    SLEEP_TIME=5s
    LAST_ERR=127
    clear 
    echo HOST: $HOST2PING 
    while true; do 
        ping -c1 -W5 $HOST2PING >/dev/null 
        ERR=$?
        if [ "$LAST_ERR" -ne "$ERR" ]; then
            LAST_ERR=$ERR 
            echo -ne "\n$(date '+%x, %X'): "
        fi
        case $ERR in
            0) echo -n '+'; beep -f220 -l30 
                ;;
            1) echo -n '·'; 
                ;;
            2) echo -n '×'; 
                ;;
            *) echo -n 'Error'; exit
                ;;
        esac
        sleep $SLEEP_TIME;
    done 
}