修改状态栏位置:
gsettings set com.canonical.Unity.Launcher launcher-position Bottom #底部(苹果风格)
gsettings set com.canonical.Unity.Launcher launcher-position Left #左侧(默认)
gsettings set com.canonical.Unity.Launcher launcher-position Right #右侧
gsettings set com.canonical.Unity.Launcher launcher-position Top #顶部