rmdir directory ...
The rmdir command removes the provided list of directories (they are removed in the order given).

A directory must be empty to be removed by the rmdir command.

You must enter all sub-directories before their parent directory so they all could be removed.

• Removing a directory:
  $ rmdir folder1 The folder must be empty, otherwise, you will get this error: "rmdir: folder: Directory not empty".
  
  
• Removing a directory and its sub-directories:
  $ rmdir folder/folder1 folder/folder2 folder