Ubuntu16.04下屏幕侧边栏的设置

ubnutu的任务栏都是在左侧：

zhang@zhang-virtual-machine:~$ gsettings set com.canonical.Unity.Launcher launcher-position Bottom   #底部（苹果风格）
zhang@zhang-virtual-machine:~$ gsettings set com.canonical.Unity.Launcher launcher-position Left     #左侧（默认）
zhang@zhang-virtual-machine:~$ gsettings set com.canonical.Unity.Launcher launcher-position Right    #右侧
zhang@zhang-virtual-machine:~$ gsettings set com.canonical.Unity.Launcher launcher-position Top      #顶部