diff --git a/src/app/dman.cpp b/src/app/dman.cpp
index 340fa504..cf3b54c2 100755
--- a/src/app/dman.cpp
+++ b/src/app/dman.cpp
@@ -88,8 +88,11 @@ int main(int argc, char **argv)
     if (Utils::judgeLoongson()) {
         //add by wujian 20200907 for 解决龙芯平台，QWebEngine因字体库字体太多，造成启动失败的问题
         QString strHomePath = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
-        QString strExeShell = QString("rm -fr %1/.cache/fontconfig").arg(strHomePath);
-        shellObj::execSystem(strExeShell);
+        QString strCmd = QString("rm");
+        QStringList args;
+        args << "-rf";
+        args << QString("%1/.cache/fontconfig").arg(strHomePath);
+        shellObj::execSystem(strCmd, args);
     }
 
     //设置窗口属性
diff --git a/src/base/command.cpp b/src/base/command.cpp
index 65d004a4..d8601728 100644
--- a/src/base/command.cpp
+++ b/src/base/command.cpp
@@ -11,45 +11,6 @@
 
 namespace dman {
 
-bool RunScriptFile(const QStringList &args)
-{
-    Q_ASSERT(!args.isEmpty());
-    if (args.isEmpty()) {
-        qCritical() << "RunScriptFile() args is empty!";
-        return false;
-    }
-
-    // Change working directory.
-    const QString current_dir(QFileInfo(args.at(0)).absolutePath());
-    if (!QDir::setCurrent(current_dir)) {
-        qCritical() << "Failed to change working directory:" << current_dir;
-        return false;
-    }
-
-    // NOTE(xushaohua): If args[0] is not a script file, bash may raise
-    // error message.
-    return SpawnCmd("/bin/bash", args);
-}
-
-bool RunScriptFile(const QStringList &args, QString &output, QString &err)
-{
-    Q_ASSERT(!args.isEmpty());
-    if (args.isEmpty()) {
-        qCritical() << "RunScriptFile() arg is empty!";
-        return false;
-    }
-
-    // Change working directory.
-    const QString current_dir(QFileInfo(args.at(0)).absolutePath());
-    if (!QDir::setCurrent(current_dir)) {
-        qCritical() << "Failed to change working directory:" << current_dir;
-        return false;
-    }
-
-    // TODO(xushaohua): Remove bash
-    return SpawnCmd("/bin/bash", args, output, err);
-}
-
 bool SpawnCmd(const QString &cmd, const QStringList &args)
 {
     QProcess process;
diff --git a/src/base/command.h b/src/base/command.h
index b0e85fa9..a8f93f1f 100644
--- a/src/base/command.h
+++ b/src/base/command.h
@@ -9,15 +9,6 @@
 
 namespace dman {
 
-// Run a script file in bash, no matter it is executable or not.
-// First argument in |args| is the path to script file.
-// Current working directory is changed to folder of |args[0]|.
-// Returns true if |args[0]| executed and exited with 0.
-// |output| and |err| are content of stdout and stderr.
-
-bool RunScriptFile(const QStringList &args);
-bool RunScriptFile(const QStringList &args, QString &output, QString &err);
-
 // Run |cmd| with |args| in background and returns its result.
 bool SpawnCmd(const QString &cmd, const QStringList &args);
 bool SpawnCmd(const QString &cmd, const QStringList &args, QString &output);
diff --git a/src/controller/shellobj.cpp b/src/controller/shellobj.cpp
index 20a053c6..577afcce 100644
--- a/src/controller/shellobj.cpp
+++ b/src/controller/shellobj.cpp
@@ -21,18 +21,19 @@ shellObj::~shellObj()
     thread = nullptr;
 }
 
-shellObj &shellObj::execSystem(const QString &cmds)
+shellObj &shellObj::execSystem(const QString &cmds, const QStringList &args)
 {
     shellObj *shell = new shellObj();
     qDebug() << "shell exec:" << cmds;
     //执行shell命令
-    shell->startSystemThread(cmds);
+    shell->startSystemThread(cmds, args);
     return *shell;
 }
 
-int shellObj::startSystemThread(const QString &cmd)
+int shellObj::startSystemThread(const QString &cmd, const QStringList &args)
 {
-    this->cmd = cmd;
+    m_cmd = cmd;
+    m_args = args;
     thread = new QThread();
     connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));
     moveToThread(thread);
@@ -45,8 +46,10 @@ int shellObj::startSystemThread(const QString &cmd)
 
 void shellObj::runSystem()
 {
-    system(cmd.toStdString().data());
-    qDebug() << "shell " << cmd << endl;
-//    emit onCompleted(iRst < 0 ? "error" : "");
+    QProcess process;
+    process.start(m_cmd, m_args);
+    process.waitForFinished(-1);
+
+    qDebug() << "shell cmd:" << m_cmd << "args:" << m_args;
     delete this;
 }
diff --git a/src/controller/shellobj.h b/src/controller/shellobj.h
index 2c3027e9..b708f915 100644
--- a/src/controller/shellobj.h
+++ b/src/controller/shellobj.h
@@ -24,11 +24,11 @@ class shellObj : public QObject
      * @param cmds 命令内容
      * @return  新建的DMailShell对象
      */
-    static shellObj &execSystem(const QString &cmds);
+    static shellObj &execSystem(const QString &cmds, const QStringList &m_args = QStringList());
 
 
 private:
-    int startSystemThread(const QString &cmd);
+    int startSystemThread(const QString &m_cmd, const QStringList &m_args);
     /**
      * @brief runSystem 采用ｓｙｓｔｅｍ来执行ｓｈｅｌｌ命令
      */
@@ -38,7 +38,12 @@ class shellObj : public QObject
     /**
      * @brief cmd 保存shell命令
      */
-    QString cmd;
+    QString m_cmd;
+
+    /**
+     * @brief args 命令参数
+     */
+    QStringList m_args;
 
     /**
      * @brief thread　线程对象
diff --git a/src/dbus/dmanwatcher.cpp b/src/dbus/dmanwatcher.cpp
index 856c6808..d6cd0245 100644
--- a/src/dbus/dmanwatcher.cpp
+++ b/src/dbus/dmanwatcher.cpp
@@ -21,11 +21,21 @@ DManWatcher::DManWatcher():m_Timer(new QTimer (this))
 void DManWatcher::onTimeOut()
 {
     QString cmd, outPut;
+    QStringList args;
     //判断dman客户端是否存在，如果不存在退出服务。
-    cmd = QString("ps aux | grep -w dman$");
-    outPut= executCmd(cmd);
-    int ret = outPut.length();
-    if (!ret)
+    cmd = "ps";
+    args << "aux";
+    outPut= executCmd(cmd, args);
+    bool bHasDman = false;
+    QStringList rows = outPut.split('\n');
+    for (auto line : rows) {
+        QStringList items = line.split(' ');
+        if (items.contains("dman")) {
+            bHasDman = true;
+            break;
+        }
+    }
+    if (!bHasDman)
         QCoreApplication::exit(0);
 }
 
@@ -33,10 +43,10 @@ void DManWatcher::onTimeOut()
  * @brief 执行外部命令
  * @param strCmd:外部命令字符串
  */
-QString DManWatcher::executCmd(const QString &strCmd)
+QString DManWatcher::executCmd(const QString &strCmd, const QStringList &args)
 {
      QProcess proc;
-     proc.start("bash", QStringList() << "-c" << strCmd);
+     proc.start(strCmd, args);
      proc.waitForFinished(-1);
      return  proc.readAllStandardOutput();
 }
diff --git a/src/dbus/dmanwatcher.h b/src/dbus/dmanwatcher.h
index a1f546f9..83f0046f 100644
--- a/src/dbus/dmanwatcher.h
+++ b/src/dbus/dmanwatcher.h
@@ -21,7 +21,7 @@ class DManWatcher :public QObject
 public Q_SLOTS:
     void onTimeOut();
 private:
-    QString executCmd(const QString &strCmd);
+    QString executCmd(const QString &strCmd, const QStringList &args = QStringList());
 private:
     QTimer *m_Timer=nullptr;
 };