# if e controllo exit code comando ping
if ping -c 5 www.google.it  ; then
        status1=0 #(ok)
        echo "OK - www.google.it"
else
        status2=1 #(error)
        echo "ERROR - www.google.it"
fi


#if con operatore logico AND       
if (( ($status1 == 1) && ($status2 == 1) && ($status3 == 1 ) )); then
  echo "Gatweway ERROR ( Code $status1 $status2 $status3 )"
else
  echo "Gateway OK ( Code $status1 $status2 $status3 )"
fi