diff --git a/README.md b/README.md
index b6b7dee..5fafe9f 100644
--- a/README.md
+++ b/README.md
@@ -17,11 +17,11 @@ It might not be that worthy to write a QtWidget application for such a small fea
 2. Clone the repository:
 
    ```bash
-   git clone https://github.com/Uyanide/Wallpaper_Carousel.git --depth 1
+   git clone https://github.com/Uyanide/Wallpaper_Carousel.git --depth 1 && \
    cd Wallpaper_Carousel
    ```
 
-3. Run build script:
+3. Run [build script](app/install.sh):
 
    ```bash
    app/install.sh
@@ -33,7 +33,7 @@ It might not be that worthy to write a QtWidget application for such a small fea
    PREFIX=$HOME/.local ./app/install.sh
    ```
 
-> [!NOTE]
+> [Warning]
 >
 > This script will ask for `sudo` permission if the prefix is set to a system directory like `/usr/local`. Please make sure you have read and trust the script before proceeding.
 
@@ -50,3 +50,18 @@ A minimum config should at least contain the path(s) to wallpapers, e.g.
   }
 }
 ```
+
+By default, the path of the selected wallpaper will be output to stdout. If you want to apply the selected wallpaper automatically after selection, the `action.confirm` entry should be set, e.g.
+
+```json
+{
+  "wallpaper": {
+    "dirs": ["/path/to/your/wallpapers"]
+  },
+  "action": {
+    "confirm": "awww img \"%1\""
+  }
+}
+```
+
+`action.confirm` should be a executable followed by a couple of arguments, where `%1` will be replaced by the path of the selected wallpaper.
diff --git a/src/main.cpp b/src/main.cpp
index 619e2f5..642bd8a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-05 00:37:58
- * @LastEditTime: 2026-01-15 01:00:12
+ * @LastEditTime: 2026-01-15 01:43:14
  * @Description: Entry point.
  */
 #include <qapplication.h>
@@ -30,26 +30,25 @@ static void setLogLevel(int argc, char* argv[]) {
         QString arg(argv[i]);
         if (arg == "--debug" || arg == "-vvv" || arg == "--verbose") {
             Logger::setLogLevel(QtDebugMsg);
-            break;
+            return;
         } else if (arg == "--info" || arg == "-vv") {
             Logger::setLogLevel(QtInfoMsg);
-            break;
+            return;
         } else if (arg == "--warn" || arg == "-v") {
             Logger::setLogLevel(QtWarningMsg);
-            break;
+            return;
         } else if (arg == "--critical") {
             Logger::setLogLevel(QtCriticalMsg);
-            break;
+            return;
         } else if (arg == "--fatal") {
             Logger::setLogLevel(QtFatalMsg);
-            break;
+            return;
         } else if (arg == "--quiet") {
             Logger::quiet();
-            break;
-        } else {
-            Logger::setLogLevel(QtInfoMsg);
+            return;
         }
     }
+    Logger::setLogLevel(QtInfoMsg);
 }
 
 int main(int argc, char* argv[]) {
diff --git a/src/main_window.cpp b/src/main_window.cpp
index ab20ae6..3e8ee52 100644
--- a/src/main_window.cpp
+++ b/src/main_window.cpp
@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-05 00:37:58
- * @LastEditTime: 2026-01-15 00:47:54
+ * @LastEditTime: 2026-01-15 01:40:30
  * @Description: MainWindow implementation.
  */
 #include "main_window.h"
@@ -10,6 +10,7 @@
 #include <QKeyEvent>
 #include <QProcess>
 #include <QPushButton>
+#include <cstdio>
 #include <functional>
 
 #include "./ui_main_window.h"
@@ -241,6 +242,7 @@ void MainWindow::onConfirm() {
         return;
     }
     info(QString("Selected image: %1").arg(path));
+    puts(path.toStdString().c_str());
     const auto cmdOrig = m_config.getActionConfig().confirm;
     if (cmdOrig.isEmpty()) {
         warn("No action defined for confirmation");