Task

Rename:

   a file called     input.txt     into     output.txt     and 
   a directory called     docs     into     mydocs.


This should be done twice:  
once "here", i.e. in the current working directory and once in the filesystem root.

It can be assumed that the user has the rights to do so.

(In unix-type systems, only the user root would have
sufficient permissions in the filesystem root.)




OS-RENAME "input.txt" "output.txt".
OS-RENAME "docs" "mydocs".
 
OS-RENAME "/input.txt" "/output.txt".
OS-RENAME "/docs" "/mydocs".