diff --git a/shadowsocks-libev-debian b/shadowsocks-libev-debian
index 2ea4a31..9bca197 100644
--- a/shadowsocks-libev-debian
+++ b/shadowsocks-libev-debian
@@ -1,108 +1,106 @@
 #!/bin/bash
-# Start/stop shadowsocks.
-#
-
 
 ### BEGIN INIT INFO
-# Provides:          shadowsocks-libev
+# Provides:          Shadowsocks-libev
 # Required-Start:    $network $local_fs $remote_fs
-# Required-Stop:     $remote_fs
-# Should-Start:
-# Should-Stop:
+# Required-Stop:     $network $local_fs $remote_fs
 # Default-Start:     2 3 4 5
 # Default-Stop:      0 1 6
-# Short-Description: shadowsocks-libev is a lightweight tunneling proxy
+# Short-Description: Fast tunnel proxy that helps you bypass firewalls
+# Description:       A secure socks5 proxy, designed to protect your Internet traffic.
 ### END INIT INFO
 
 # Author: Teddysun <i@teddysun.com>
 
-# Daemon
-NAME=shadowsocks-libev
-BIN=/usr/local/bin/ss-server
-CONFIG_FILE=/etc/shadowsocks-libev/config.json
+if [ -f /usr/local/bin/ss-server ]; then
+    DAEMON=/usr/local/bin/ss-server
+elif [ -f /usr/bin/ss-server ]; then
+    DAEMON=/usr/bin/ss-server
+fi
+NAME=Shadowsocks-libev
+CONF=/etc/shadowsocks-libev/config.json
 PID_DIR=/var/run
-PID_FILE=$PID_DIR/shadowsocks.pid
+PID_FILE=$PID_DIR/shadowsocks-libev.pid
 RET_VAL=0
 
-[ -x $BIN ] || exit 0
+[ -x $DAEMON ] || exit 0
+
+if [ ! -d $PID_DIR ]; then
+    mkdir -p $PID_DIR
+    if [ $? -ne 0 ]; then
+        echo "Creating PID directory $PID_DIR failed"
+        exit 1
+    fi
+fi
+
+if [ ! -f $CONF ]; then
+    echo "$NAME config file $CONF not found"
+    exit 1
+fi
 
 check_running() {
-  if [[ -r $PID_FILE ]]; then
-    read PID <$PID_FILE
-    if [[ -d "/proc/$PID" ]]; then
-      return 0
+    if [ -r $PID_FILE ]; then
+        read PID < $PID_FILE
+        if [ -d "/proc/$PID" ]; then
+            return 0
+        else
+            rm -f $PID_FILE
+            return 1
+        fi
     else
-      rm -f $PID_FILE
-      return 1
+        return 2
     fi
-  else
-    return 2
-  fi
 }
 
 do_status() {
-  check_running
-  case $? in
-    0)
-      echo "$NAME running with PID $PID"
-      ;;
-    1)
-      echo "$NAME not running, remove PID file $PID_FILE"
-      ;;
-    2)
-      echo "Could not find PID file $PID_FILE, $NAME does not appear to be running"
-      ;;
-  esac
-  return 0
+    check_running
+    case $? in
+        0)
+        echo "$NAME (pid $PID) is running..."
+        ;;
+        1|2)
+        echo "$NAME is stopped"
+        RET_VAL=1
+        ;;
+    esac
 }
 
 do_start() {
-  if [[ ! -d $PID_DIR ]]; then
-    mkdir -p $PID_DIR || echo "failed creating PID directory $PID_DIR"; exit 1
-  fi
-  if check_running; then
-    echo "$NAME already running with PID $PID"
-    return 0
-  fi
-  if [[ ! -r $CONFIG_FILE ]]; then
-    echo "config file $CONFIG_FILE not found"
-    return 1
-  fi
-  echo "starting $NAME"
-  # sudo will set the group to the primary group of $USER
-  $BIN -u -c $CONFIG_FILE > /dev/null 2>&1 &
-  PID=$!
-  echo $PID > $PID_FILE
-  sleep 0.3
-  if ! check_running; then
-    echo "start failed"
-    return 1
-  fi
-  echo "$NAME running with PID $PID"
-  return 0
+    if check_running; then
+        echo "$NAME (pid $PID) is already running..."
+        return 0
+    fi
+    $DAEMON -u -c $CONF -f $PID_FILE
+    if check_running; then
+        echo "Starting $NAME success"
+    else
+        echo "Starting $NAME failed"
+        RET_VAL=1
+    fi
 }
 
 do_stop() {
-  if check_running; then
-    echo "stopping $NAME with PID $PID"
-    kill $PID
-    rm -f $PID_FILE
-  else
-    echo "Could not find PID file $PID_FILE"
-  fi
+    if check_running; then
+        kill -9 $PID
+        rm -f $PID_FILE
+        echo "Stopping $NAME success"
+    else
+        echo "$NAME is stopped"
+        RET_VAL=1
+    fi
 }
 
 do_restart() {
-  do_stop
-  do_start
+    do_stop
+    do_start
 }
 
 case "$1" in
-  start|stop|restart|status)
+    start|stop|restart|status)
     do_$1
     ;;
-  *)
-    echo "Usage: shadowsocks {start|stop|restart|status}"
+    *)
+    echo "Usage: $0 { start | stop | restart | status }"
     RET_VAL=1
     ;;
 esac