1.按下“Ctrl+Alt+T”或者“ALT+F2”调出终端
2.输入“gconf-editor”,回车。如果未安装gconf-editor的话,按照提示先安装,“sudo apt-get install gconf-editor”
3.此时会打开“配置编辑器”,找到“/apps/metacity/general”选项,把“button_layout”的值修改为“menu:minimize,maximize,close”
4.运行:metacity --replace