diff --git a/README.md b/README.md
index f363f5c..da88955 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ Features:
 * font view testing (both original bitmap and edited)
 * kerning support
 * selection of characters set from the char map
+* command line support
 
 what next?:
 
diff --git a/config.json b/config.json
new file mode 100644
index 0000000..c8ae3cd
--- /dev/null
+++ b/config.json
@@ -0,0 +1,41 @@
+{
+    "test": 123,
+    "fontconfig": {
+        "path": "/Users/cdingpeng/gs/DevGame/branches/X-Men_1.0.X-i18n/font",
+        "filename": "simsun.ttf",
+        "family": "SimSun",
+        "style": "Regular",
+        "faceIndex": 0,
+        "size": 24,
+        "characters": "abcsfwej",
+        "hinting": 1,
+        "renderMissing": false,
+        "antialiased": true,
+        "bold": 0,
+        "italic": 0,
+        "width": 100,
+        "height": 100,
+        "lineSpacing": 2,
+        "charSpacing": 2,
+        "DPI": 120
+    },
+    "layoutconfig": {
+        "onePixelOffset": true,
+        "potImage": true,
+        "sizeIncrement": 2,
+        "offsetLeft": 0,
+        "offsetTop": 0,
+        "offsetRight": 0,
+        "offsetBottom": 0,
+        "layouter": "Box layout"
+    },
+    "outputconfig": {
+        "path": "/Users/cdingpeng/gs/DevGame/branches/X-Men_1.0.X-i18n/font",
+        "writeImage": true,
+        "imageName": "simsun_regular",
+        "imageFormat": "png",
+        "writeDescription": true,
+        "descriptionName": "simsun_regular",
+        "descriptionFormat": "Sparrow"
+    }
+}
\ No newline at end of file
diff --git a/src/charactersframe.cpp b/src/charactersframe.cpp
index bdf62df..a769441 100644
--- a/src/charactersframe.cpp
+++ b/src/charactersframe.cpp
@@ -124,6 +124,10 @@ QString CharactersFrame::removeDuplicates(const QString& text) const {
 }
 
 QString CharactersFrame::sortChars(const QString& text) const {
+    if(text.size()==0)
+    {
+        return text;
+    }
     QVector<uint> ucs4chars = text.toUcs4();
     qSort(ucs4chars);
     return QString::fromUcs4(&ucs4chars.front(), ucs4chars.size());
diff --git a/src/fontbuilder.cpp b/src/fontbuilder.cpp
index 7d6b2b9..1e11267 100644
--- a/src/fontbuilder.cpp
+++ b/src/fontbuilder.cpp
@@ -165,6 +165,18 @@ void FontBuilder::saveConfig(QSettings& settings,
     settings.endGroup();
 }
 
+void FontBuilder::exportWithConfig(QSettings &settings) {
+    readConfig(settings,"fontconfig",m_font_config);
+    m_font_config->normalize();
+    readConfig(settings,"layoutconfig",m_layout_config);
+
+    //m_font_config->blockSignals(font_config_block);
+    m_font_config->emmitChange();
+
+    readConfig(settings,"outputconfig",m_output_config);
+    on_pushButtonWriteFont_clicked();
+}
+
 void FontBuilder::readConfig(QSettings& settings,
                              const QString& name,
                              QObject* object) {
@@ -381,6 +393,4 @@ void FontBuilder::on_action_Open_triggered()
 
         }
     }
-
-
 }
diff --git a/src/fontbuilder.h b/src/fontbuilder.h
index 151a73e..9179399 100644
--- a/src/fontbuilder.h
+++ b/src/fontbuilder.h
@@ -57,6 +57,7 @@ class FontBuilder : public QMainWindow {
 public:
     FontBuilder(QWidget *parent = 0);
     ~FontBuilder();
+    void exportWithConfig(QSettings& settings);
 
 protected:
     void changeEvent(QEvent *e);
diff --git a/src/main.cpp b/src/main.cpp
index 36ca413..2405534 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -31,10 +31,18 @@
 #include <Qt>
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
 #include <QApplication>
+#include <QCommandLineParser>
 #else
 #include <QtGui/QApplication>
 #endif
 #include <QCoreApplication>
+#include <QFile>
+#include <QJsonDocument>
+#include <QJsonArray>
+#include <QJsonObject>
+#include <QSettings>
+#include <QObject>
+#include <QDebug>
 #include "fontbuilder.h"
 
 int main(int argc, char *argv[])
@@ -43,7 +51,59 @@ int main(int argc, char *argv[])
     QCoreApplication::setOrganizationName("AndryBlack");
     QCoreApplication::setOrganizationDomain("andryblack.com");
     QCoreApplication::setApplicationName("FontBuilder");
+    QCoreApplication::setApplicationVersion("0.7");
+
+    QCommandLineParser parser;
+    parser.setApplicationDescription("Test");
+    parser.addHelpOption();
+    parser.addVersionOption();
+    parser.addPositionalArgument("config", QCoreApplication::translate("main","config file"));
+    parser.process(a);
+
+    const QStringList args = parser.positionalArguments();
+
     FontBuilder w;
-    w.show();
+
+    if (args.count() > 0)
+    {
+        QString configFile = args.at(0);
+        qDebug() << "Export with config file " << configFile;
+        QFile file(configFile);
+        file.open(QIODevice::ReadOnly | QIODevice::Text);
+        QByteArray rawData =  file.readAll();
+        qDebug() << "With content:\n" << rawData;
+        QJsonDocument document(QJsonDocument::fromJson(rawData));
+
+        if(document.isNull())
+        {
+            qDebug() << "Config prase error.";
+            exit(1);
+        }
+
+        QJsonObject config = document.object();
+        file.close();
+
+        QSettings settings;
+        for(QJsonObject::const_iterator iter=config.begin(); iter!= config.end(); iter++)
+        {
+            settings.beginGroup(iter.key());
+
+            QJsonObject node = iter.value().toObject();
+            for(QJsonObject::const_iterator niter= node.begin(); niter!=node.end(); niter++)
+            {
+                settings.setValue(niter.key(),niter.value().toVariant());
+            }
+
+            settings.endGroup();
+        }
+        w.exportWithConfig(settings);
+
+        qDebug() << "Export finished";
+        exit(0);
+    }else
+    {
+        w.show();
+    }
+
     return a.exec();
 }