当我使用时，gksu我收到 Gtk 警告，例如：
$ gksu gedit /etc/fstab
(gksu:2792): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gksu:2792): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gksu:2792): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gksu:2792): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
当我关闭正在运行的应用程序实例（在本例中为 gedit）时，我得到：
(gedit:2796): Gtk-WARNING **: Attempting to set the permissions of `/root/.local/share/recently-used.xbel', but failed: No such file or directory
(gedit:2796): Gtk-WARNING **: Attempting to store changes into …