ubuntu16.4 修改菜单到下方 错误：GLib-GIO-Message: Using the 'memory' GSettings backend. Your settings will not be saved or shared with other applications.

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