Q:  Compare usages for more than two types of operatingsystems. For example, how to create directory.

A:  Usually, in Linux you should use commands to finish almost all operations, but in Windows, mouse and keyboard can solve problems , it can give you many beautiful sights.

For example, in Linux,you should use command as  ‘mkdir newdirectory’. In Windows,you can open the resource manager directly, then click the right mouse button, and choose the option ‘新建’ and choose ‘文件夹’. Or you can use DOS window and use command ‘md newdirectory’ to create a directory.