diff --git a/core/config.go b/core/config.go
index 87f46b0..b852efc 100644
--- a/core/config.go
+++ b/core/config.go
@@ -209,8 +209,8 @@ type NetworkConfig struct {
 	TCPPort    int
 }
 
-func parseParams(subCommand string) {
-	fset := flag.NewFlagSet(subCommand, flag.ExitOnError)
+func parseParams(name string, arguments []string) {
+	fset := flag.NewFlagSet(name, flag.ExitOnError)
 	serverHost := fset.String("serverhost", "api.openp2p.cn", "server host ")
 	serverPort := fset.Int("serverport", WsPort, "server port ")
 	// serverHost := flag.String("serverhost", "127.0.0.1", "server host ") // for debug
@@ -229,12 +229,8 @@ func parseParams(subCommand string) {
 	daemonMode := fset.Bool("d", false, "daemonMode")
 	notVerbose := fset.Bool("nv", false, "not log console")
 	newconfig := fset.Bool("newconfig", false, "not load existing config.json")
-	logLevel := fset.Int("loglevel", 1, "0:debug 1:info 2:warn 3:error")
-	if subCommand == "" { // no subcommand
-		fset.Parse(os.Args[1:])
-	} else {
-		fset.Parse(os.Args[2:])
-	}
+	logLevel := fset.Int("loglevel", int(LvINFO), "0:debug 1:info 2:warn 3:error")
+	fset.Parse(arguments)
 
 	config := AppConfig{Enabled: 1}
 	config.PeerNode = *peerNode
@@ -255,46 +251,34 @@ func parseParams(subCommand string) {
 	gConf.daemonMode = *daemonMode
 	// spec paramters in commandline will always be used
 	fset.Visit(func(f *flag.Flag) {
-		if f.Name == "sharebandwidth" {
+		select f.Name {
+		case "sharebandwidth":
 			gConf.Network.ShareBandwidth = *shareBandwidth
-		}
-		if f.Name == "node" {
-			gConf.Network.Node = *node
-		}
-		if f.Name == "serverhost" {
-			gConf.Network.ServerHost = *serverHost
-		}
-		if f.Name == "loglevel" {
+		case "serverhost":
+			gConf.Network.ServerHost = ""
+		case "loglevel":
 			gConf.LogLevel = *logLevel
-		}
-		if f.Name == "tcpport" {
+		case "tcpport":
 			gConf.Network.TCPPort = *tcpPort
-		}
-		if f.Name == "token" {
+		case "token":
 			gConf.setToken(*token)
+		case "node":
+			gConf.Network.Node = *node
 		}
 	})
 	// set default value
 	if gConf.Network.ServerHost == "" {
 		gConf.Network.ServerHost = *serverHost
 	}
-	if *node != "" {
-		gConf.Network.Node = *node
-	} else {
+	if gConf.Network.Node == "" {
 		envNode := os.Getenv("OPENP2P_NODE")
-		if envNode != "" {
-			gConf.Network.Node = envNode
-		}
-		if gConf.Network.Node == "" { // if node name not set. use os.Hostname
-			gConf.Network.Node = defaultNodeName()
+		if envNode == "" { // if node name not set. use os.Hostname
+			envNode = defaultNodeName()
 		}
+		gConf.Network.Node = envNode
 	}
 	if gConf.Network.TCPPort == 0 {
-		if *tcpPort == 0 {
-			p := int(nodeNameToID(gConf.Network.Node)%15000 + 50000)
-			tcpPort = &p
-		}
-		gConf.Network.TCPPort = *tcpPort
+		gConf.Network.TCPPort = int(nodeNameToID(gConf.Network.Node)%15000 + 50000)
 	}
 	if *token == 0 {
 		envToken := os.Getenv("OPENP2P_TOKEN")
@@ -309,7 +293,7 @@ func parseParams(subCommand string) {
 	gConf.Network.UDPPort2 = UDPPort2
 	gLog.setLevel(LogLevel(gConf.LogLevel))
 	if *notVerbose {
-		gLog.setMode(LogFile)
+		gLog.setMode(gLog.mode() &^ LogConsole)
 	}
 	// gConf.mtx.Unlock()
 	gConf.save()
diff --git a/core/install.go b/core/install.go
index 3c0dfb3..97a0565 100644
--- a/core/install.go
+++ b/core/install.go
@@ -35,7 +35,7 @@ func install() {
 
 	uninstall()
 	// save config file
-	parseParams("install")
+	parseParams("install", os.Args[2:])
 	targetPath := filepath.Join(defaultInstallPath, defaultBinName)
 	d := daemon{}
 	// copy files
diff --git a/core/log.go b/core/log.go
index cda5595..ac7b79b 100644
--- a/core/log.go
+++ b/core/log.go
@@ -29,8 +29,8 @@ func init() {
 	loglevel = make(map[LogLevel]string)
 	logFileNames[0] = ".log"
 	loglevel[LvDEBUG] = "DEBUG"
-	loglevel[LvINFO] = "INFO"
-	loglevel[LvWARN] = "WARN"
+	loglevel[LvINFO] = "INFO "
+	loglevel[LvWARN] = "WARN "
 	loglevel[LvERROR] = "ERROR"
 
 }
@@ -97,6 +97,11 @@ func (l *logger) setMode(mode int) {
 	defer l.mtx.Unlock()
 	l.mode = mode
 }
+func (l *logger) mode() int {
+	l.mtx.Lock()
+	defer l.mtx.Unlock()
+	return l.mode
+}
 
 func (l *logger) checkFile() {
 	if l.maxLogSize <= 0 {
@@ -139,10 +144,10 @@ func (l *logger) Printf(level LogLevel, format string, params ...interface{}) {
 	}
 	pidAndLevel := []interface{}{l.pid, loglevel[level]}
 	params = append(pidAndLevel, params...)
-	if l.mode & LogFile != 0 {
+	if l.mode&LogFile != 0 {
 		l.loggers[0].Printf("%d %s "+format+l.lineEnding, params...)
 	}
-	if l.mode & LogConsole != 0 {
+	if l.mode&LogConsole != 0 {
 		l.stdLogger.Printf("%d %s "+format+l.lineEnding, params...)
 	}
 }
@@ -156,10 +161,10 @@ func (l *logger) Println(level LogLevel, params ...interface{}) {
 	pidAndLevel := []interface{}{l.pid, " ", loglevel[level], " "}
 	params = append(pidAndLevel, params...)
 	params = append(params, l.lineEnding)
-	if l.mode & LogFile != 0 {
+	if l.mode&LogFile != 0 {
 		l.loggers[0].Print(params...)
 	}
-	if l.mode & LogConsole != 0 {
+	if l.mode&LogConsole != 0 {
 		l.stdLogger.Print(params...)
 	}
 }
diff --git a/core/openp2p.go b/core/openp2p.go
index a6b2a5d..20aeb20 100644
--- a/core/openp2p.go
+++ b/core/openp2p.go
@@ -29,7 +29,7 @@ func Run() {
 	} else {
 		installByFilename()
 	}
-	parseParams("")
+	parseParams("", os.Args[1:])
 	gLog.Println(LvINFO, "openp2p start. version: ", OpenP2PVersion)
 	gLog.Println(LvINFO, "Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
 
@@ -64,14 +64,10 @@ func RunAsModule(baseDir string, token string, bw int, logLevel int) *P2PNetwork
 	os.Chdir(baseDir) // for system service
 	gLog = NewLogger(baseDir, ProductName, LvDEBUG, 1024*1024, LogFile|LogConsole)
 
-	parseParams("")
+	args := append(os.Args[1:], "-token", token, "-loglevel", strconv.FormatInt(logLevel, 10),
+		"-sharebandwidth", strconv.FormatInt(bw, 10))
+	parseParams("", args)
 
-	n, err := strconv.ParseUint(token, 10, 64)
-	if err == nil {
-		gConf.setToken(n)
-	}
-	gLog.setLevel(LogLevel(logLevel))
-	gConf.setShareBandwidth(bw)
 	gLog.Println(LvINFO, "openp2p start. version: ", OpenP2PVersion)
 	gLog.Println(LvINFO, "Contact: QQ group 16947733, Email openp2p.cn@gmail.com")
 	gLog.Println(LvINFO, &gConf)