-echo " checking that it runs... " >>$LOG
-test -f zebrasrv.pid || exit 1
-PID=`cat zebrasrv.pid`
-ps -p $PID | grep $PID >/dev/null || exit 1
+if grep 'not available' out >/dev/null; then
+ test -f z.pid && rm -f z.pid
+ exit 0
+fi
+
+PID=`cat z.pid`
+echo " checking that it still runs..." >>$LOG
+kill -CHLD $PID >/dev/null 2>&1 || exit 1