Ubuntu 上使用Extension Manager 安裝插件，但目前無法在Extension Manager 中卸載。
卸載方式可以通過 gnome-extensions 命令進行卸載：
Usage:gnome-extensions COMMAND [ARGS…]Commands:help Print helpversion Print versionenable Enable extensiondisable Disable extensionreset Reset extensionuninstall Uninstall extensionlist List extensionsinfo Show extension infoshow Show extension infoprefs Open extension preferencescreate Create extensionpack Package extensioninstall Install extension bundle
示例：
zhaoc@zhaoc:/$ gnome-extensions list
user-theme@gnome-shell-extensions.gcampax.github.com
dock-unroll@fthx
ding@rastersoft.com
tiling-assistant@ubuntu.com
ubuntu-appindicators@ubuntu.com
ubuntu-dock@ubuntu.com
zhaoc@zhaoc:/$ gnome-extensions uninstall dock-unroll@fthx
