1.Ctrl+Alt+T调出终端
2.首先安装gconf-editor: sudo apt-get install gconf-editor
会提示叫你安装 gconf-editor
安装完成后再运行一遍 gconf-editor: sudo apt-get install gconf-editor
3.找到 apps/metacity/general/ 在这个下面找到键button-layout 将其值修改为menu:minimize,maximize,close