add minimize maximize in debian

To add minimize and maximize buttons to your application windows in Debian, you can adjust the window manager settings or the desktop environment settings, as each environment may have different ways of handling window controls. Below are some common desktop environments and the steps to enable or configure these controls accordingly.

### For GNOME

1. **Install GNOME Tweaks** (if not already installed):
   ```bash
   sudo apt install gnome-tweaks
   ```

2. **Open GNOME Tweaks**:
   You can find it in the applications menu by searching for "Tweaks".

3. **Navigate to the "Window Titlebars" section**:
   - In the GNOME Tweaks application, go to the "Appearance" tab (or "Window Titlebars" depending on your version).
   
4. **Enable Minimize/Maximize Buttons**:
   - Look for settings related to window controls. You may see options to add the minimize and maximize buttons. Enable these options.

5. **Close GNOME Tweaks**:
   The changes should take effect immediately.

### For XFCE

1. **Open Window Manager Settings**:
   You can do this by right-clicking on the desktop and selecting "Desktop Settings" or by going to the XFCE applications menu, then navigating to `Settings` > `Window Manager`.

2. **Configure Button Layout**:
   - In the "Window Manager" dialog, go to the "Style" tab.
   - Under the "Button layout", you can customize the layout by adding or rearranging buttons such as minimize, maximize, and close.
   - For example, use a layout like: `minimize,maximize,close`.

3. **Apply and Close**:
   Changes take effect immediately.

### For KDE Plasma

1. **Open System Settings**:
   You can find this in the applications menu by searching for "System Settings".

2. **Go to Window Management**:
   Navigate to `Window Management` > `KWin`.

3. **Adjust Decorations**:
   - Click on `Window Decorations`.
   - In the "Button Layout" section, you can customize the buttons that appear on the window titlebars, including minimize and maximize.

4. **Apply Changes**:
   Make sure to apply the changes before closing the settings window.

### For MATE

1. **Open MATE Control Center**:
   Search for "Control Center" in your applications menu.

2. **Go to Window Preferences**:
   Under the `Look and Feel` section, click on `Windows`.

3. **Configure Appearance**:
   - In the `Window Titlebars` tab, you should find options to customize your window button layout, including minimize, maximize, and close buttons.

4. **Apply and Close**:
   Save the changes you made.

### General Notes

- If you don't see the minimize/maximize options, ensure that your window manager or desktop environment supports these features. Some lightweight window managers might have limited features.
- For window managers like Openbox or Fluxbox, you'll need to edit their configuration files manually to define the buttons you want to display.
  
After following the relevant instructions for your desktop environment, you should be able to see minimize and maximize buttons on your application windows in Debian.