1.修改命令
#在终端输入 gsettings set com.canonical.Unity.Launcher launcher-position Bottom
2.如果遇错
GLib-GIO-Message: Using the ‘memory‘ GSettings backend. Your settings will not be saved or shared with other applications.
3.输入命令,再执行上一步
export GIO_EXTRA_MODULES=/usr/lib/x86_64-linux-gnu/gio/modules/
注:这是临时解决方法,永久解决:http://blog.csdn.net/wuguangbin1230/article/details/77524440,没试过