Shell Programming and Scripting

function findClients() {
    local ClientnotReachable=
    echo -n "Finding online Client...: "
    do
    echo "Client No: $Client"
    ping -c 1 -W 1 p$Client >/dev/null 2>&1
    local ret=$?
    if [ $ret = 0 ]; then
      Clients="${Clients}P${Client} "
      echo -n "$Client "
    elif [ $ret = 1 ]; then
      ClientnotReachable="${ClientnotReachable}Client${Client} "
      echo -n ". "
    elif [ $ret = 2 ]; then
      # no entry found in /etc/hosts or from DNS
      ClientnotReachable="${ClientnotReachable}Client${Client} "
      echo -n ". "
    fi
  done
  echo
  if [ ! -z "$ClientnotReachable" ]; then
    echo "Following Client are not reachable: $ClientnotReachable"
  fi
}

findClients
for Client in $Clients; do
echo -n "$Client " >t
ssh root@$Client "tar -xvf /lib/modules/2.6.20.1/modules-2.6.20.1.tar"> h.txt
done