rsys_users=`ssh -q "$SYSTEM" w | tail -n +3 | wc -l`
if [ "$rsys_users" = "0" ]; then
echo "$NAME: power off \"$SYSTEM\" again ..."
rsys_users=`ssh -q "$SYSTEM" w | tail -n +3 | wc -l`
if [ "$rsys_users" = "0" ]; then
echo "$NAME: power off \"$SYSTEM\" again ..."