Windows

When you use windows operating system, if you want to create a new directory, you can click on the new folder by clicking on the right side of the mouse, then input the name of the directory. Or you can open the \'CMD\', and use the command \"MD < folderName >\" to create the folder. What’s more, if you want to delete the directory, you can drag the folder into the trash. You also can click on the folder then select \'delete\'. Finally, the folder will disappear.

Linux

In the Linuxc operating system you can input \'mkdir+DirName\' in the DOS window to create folders. Users who want to create folders or directories must have write permission to the parent folder of the created folder. Also if you want to delete the directory, you can input \'rm+ DirName\' in the DOS window. Then you delete it successfully.

MAC OS X

In the MAC OS operating system, if you want to create a new directory, you can click on the new folder by clicking on the right side of the mouse, then input the name of the directory. Also, you can input ‘mkdir+DirName’ in the terminal. It will produce a directory in the desktop.