这个 Dock（我的意思是它看起来像一个 Dock，但不可点击）在我从终端为 nautilus 安装了一些插件和扩展并重新启动电脑后就出现了！
我之前安装的扩展：
sudo apt-get install wbar udiskie tortoisehg-nautilus subliminal-nautilus seahorse-nautilus rabbitvcs-nautilus rabbitvcs-core ooo-thumbnailer nautilus-wipe nautilus-scripts-manager nautilus-script-manager nautilus-script-debug nautilus-script-collection-svn nautilus-script-audio-convert nautilus-nextcloud nautilus-kdeconnect nautilus-image-converter nautilus-ideviceinfo nautilus-hide nautilus-gtkhash nautilus-font-manager nautilus-filename-repairer nautilus-extension-burner nautilus-admin mat2 makexvpics libnautilus-extension-dev libfm4 intltool heif-thumbnailer gnome-hwp-support fvwm-crystal folder-color eiciel easytag-nautilus clamtk-gnome clamtk caja-seahorse cairo-dock-shortcuts-plug-in -y
