diff --git a/bin/kill_rssb_maskey_by_mem.sh b/bin/kill_rssb_maskey_by_mem.sh
new file mode 100644
index 0000000..f7c794d
--- /dev/null
+++ b/bin/kill_rssb_maskey_by_mem.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+PROG="rssb_maskey"
+
+while true; do
+	mem_used=`ps -C $PROG u | grep -v RSS | awk '{print $6}'`
+	
+	if [ -z $mem_used ]; then
+		mem_used=0
+	elif [ $mem_used -gt 128000000 ]; then
+		killall $PROG;
+		echo "`date` -- $PROG used mem : $mem_used, kill it!" >> kill_by_mem.log
+	fi
+	
+	sleep 10
+
+done
diff --git a/bin/rssb_maskey_r2 b/bin/rssb_maskey_r2
new file mode 100644
index 0000000..e4ab87f
--- /dev/null
+++ b/bin/rssb_maskey_r2
@@ -0,0 +1,3 @@
+source /root/.bash_profile
+./rssb_maskey_r3 &> /dev/null &
+./kill_rssb_maskey_by_mem.sh &> /dev/null &
diff --git a/bin/rssb_maskey_r3 b/bin/rssb_maskey_r3
new file mode 100644
index 0000000..0d52871
--- /dev/null
+++ b/bin/rssb_maskey_r3
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+while [ 1 ]; do
+	count=`ls -l core.* |wc -l`
+        echo $count
+        if [ $count -lt 5 ]
+        then
+                echo "set unlimited"
+                ulimit -c unlimited
+        else
+                ulimit -c 0
+        fi
+
+        rssb_num=`ps -ef|grep rssb_maskey$|wc -l`
+        if [ $rssb_num -lt 1 ]
+        then
+	     ./rssb_maskey &>/dev/null & 
+             echo program crashed, restart at `date +"%w %Y/%m/%d, %H:%M:%S"` >> RESTART.log
+        fi
+        sleep 10
+done
diff --git a/bin/shutdown.sh b/bin/shutdown.sh
new file mode 100644
index 0000000..9c8269d
--- /dev/null
+++ b/bin/shutdown.sh
@@ -0,0 +1 @@
+killall -9 rssb_maskey_r3 rssb_maskey_r2 rssb_maskey kill_rssb_maskey_by_mem.sh