diff --git a/rel/files/emqttd_ctl.bk b/rel/files/emqttd_ctl.bk
deleted file mode 100644
index 606562e88..000000000
--- a/rel/files/emqttd_ctl.bk
+++ /dev/null
@@ -1,300 +0,0 @@
-# Check the first argument for instructions
-case "$1" in
-    status)
-        if [ $# -ne 1 ]; then
-            echo "Usage: $SCRIPT status"
-            exit 1
-        fi
-
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "Node is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl status $@
-        ;;
-
-    cluster)
-        if [ $# -gt 2 ]; then
-            echo "Usage: $SCRIPT cluster [<Node>]"
-            exit 1
-        fi
-
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl cluster $@
-        ;;
-
-    useradd)
-        if [ $# -ne 3 ]; then
-            echo "Usage: $SCRIPT useradd <Username> <Password>"
-            exit 1
-        fi
-
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl useradd $@
-        ;;
-
-    userdel)
-        if [ $# -ne 2 ]; then
-            echo "Usage: $SCRIPT userdel <Username>"
-            exit 1
-        fi
-
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl userdel $@
-        ;;
-        
-    vm)
-        if [ $# -gt 2 ]; then
-            echo "Usage: $SCRIPT vm [ load | memory | process | io ]"
-            exit 1
-        fi
-
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl vm $@
-        ;;
-
-    broker)
-        if [ $# -ne 1 ]; then
-            echo "Usage: $SCRIPT broker"
-            exit 1
-        fi
-
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl broker $@
-        ;;
-
-    stats)
-        if [ $# -ne 1 ]; then
-            echo "Usage: $SCRIPT stats"
-            exit 1
-        fi
-
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl stats $@
-        ;;
-
-    metrics)
-        if [ $# -ne 1 ]; then
-            echo "Usage: $SCRIPT metrics"
-            exit 1
-        fi
-
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl metrics $@
-        ;;
-
-    bridges)
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        if [[ $# -eq 2 ]] && [[ $2 = "list" ]]; then
-            $NODETOOL rpc emqttd_ctl bridges list
-        elif [[ $# -eq 2 ]] && [[ $2 = "options" ]]; then
-            $NODETOOL rpc emqttd_ctl bridges options
-        elif [[ $# -eq 4 ]] && [[ $2 = "stop" ]]; then
-            shift
-            $NODETOOL rpc emqttd_ctl bridges $@
-        elif [[ $# -ge 4 ]] && [[ $2 = "start" ]]; then
-            shift
-            $NODETOOL rpc emqttd_ctl bridges $@
-        else
-            echo "Usage: "
-            echo "$SCRIPT bridges list"
-            echo "$SCRIPT bridges start <Node> <Topic>"
-            echo "$SCRIPT bridges start <Node> <Topic> <Options>"
-            echo "$SCRIPT bridges stop  <Node> <Topic>"
-            exit 1
-        fi
-        ;;
-    clients)
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        if [ $# -eq 2 -a $2 = "list" ]; then
-            $NODETOOL rpc emqttd_ctl clients list
-        elif [ $# -eq 3 ]; then
-            shift
-            $NODETOOL rpc emqttd_ctl clients $@
-        else
-            echo "Usage: "
-            echo "$SCRIPT clients list"
-            echo "$SCRIPT clients show <ClientId>"
-            echo "$SCRIPT clients kick <ClientId>"
-            exit 1
-        fi
-        ;;
-    sessions)
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        if [ $# -eq 2 -a $2 = "list" ]; then
-            $NODETOOL rpc emqttd_ctl sessions list
-        elif [ $# -eq 3 ]; then
-            shift
-            $NODETOOL rpc emqttd_ctl sessions $@
-        else
-            echo "Usage: "
-            echo "$SCRIPT sessions list"
-            echo "$SCRIPT sessions show <ClientId>"
-            exit 1
-        fi
-        ;;
-    plugins)
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        if [ $# -eq 2 -a $2 = "list" ]; then
-            $NODETOOL rpc emqttd_ctl plugins list
-        elif [ $# -eq 3 ]; then
-            shift
-            $NODETOOL rpc emqttd_ctl plugins $@
-        else
-            echo "Usage: "
-            echo "$SCRIPT plugins list"
-            echo "$SCRIPT plugins load <Plugin>"
-            echo "$SCRIPT plugins unload <Plugin>"
-            exit 1
-        fi
-        ;;
-    listeners)
-        if [ $# -gt 1 ]; then
-            echo "Usage: $SCRIPT listeners"
-            exit 1
-        fi
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        shift
-
-        $NODETOOL rpc emqttd_ctl listeners $@
-        ;;
-    trace)
-        # Make sure the local node IS running
-        RES=`$NODETOOL ping`
-        if [ "$RES" != "pong" ]; then
-            echo "emqttd is not running!"
-            exit 1
-        fi
-        if [ $# -eq 2 -a $2 = "list" ]; then
-            $NODETOOL rpc emqttd_ctl trace list
-        elif [ $# -eq 4 ]; then
-            shift
-            $NODETOOL rpc emqttd_ctl trace $@
-        else
-            echo "Usage: "
-            echo "$SCRIPT trace list"
-            echo "$SCRIPT trace client <ClientId> <LogFile>"
-            echo "$SCRIPT trace client <ClientId> off"
-            echo "$SCRIPT trace topic <Topic> <LogFile>"
-            echo "$SCRIPT trace topic <Topic> off"
-            exit 1
-        fi
-        ;;
-
-    *)
-        echo "Usage: $SCRIPT"
-		echo "  status                        #query broker status"
-        echo "  vm [ load | memory | process | io ]    #query load, memory, process and io of erlang vm"
-		echo "  broker                        #query broker version, uptime and description"
-		echo "  stats                         #query broker statistics of clients, topics, subscribers"
-        echo "  metrics                       #query broker metrics"
-		echo "  cluster [<Node>]              #query or cluster nodes"
-        echo "  ----------------------------------------------------------------"
-        echo "  clients list                  #list all clients"
-        echo "  clients show <ClientId>       #show a client"
-        echo "  clients kick <ClientId>       #kick a client"
-        echo "  sessions list                 #list all sessions"
-        echo "  sessions show <ClientId>      #show a sessions"
-        echo "  ----------------------------------------------------------------"
-        echo "  plugins list                  #query loaded plugins"
-        echo "  plugins load <Plugin>         #load plugin"
-        echo "  plugins unload <Plugin>       #unload plugin"
-        echo "  ----------------------------------------------------------------"
-        echo "  bridges list                  #query bridges"
-        echo "  bridges options               #bridge options"
-        echo "  bridges start <Node> <Topic>  #start bridge"
-        echo "  bridges start <Node> <Topic> <Options> #start bridge with options"
-        echo "  bridges stop  <Node> <Topic>   #stop bridge"
-        echo "  ----------------------------------------------------------------"
-		echo "  useradd <Username> <Password> #add user"
-		echo "  userdel <Username>            #delete user"
-        echo "  ----------------------------------------------------------------"
-		echo "  listeners                     #query broker listeners"
-        echo "  ----------------------------------------------------------------"
-        echo "  trace list                    #query all traces"
-        echo "  trace client <ClientId> <LogFile>   #trace client with ClientId"
-        echo "  trace client <ClientId> off         #stop to trace client"
-        echo "  trace topic <Topic> <LogFile>       #trace topic with Topic"
-        echo "  trace topic <Topic> off             #stop to trace Topic"
-        exit 1
-        ;;
-	
-esac
-