"""
file and directory management

File
named location at storage (hard disk)

Directory
A directory or folder is a collection of files and subdirectories

GUI
command line CL (terminal)

os-dependent
windows - RealMode MS-DOS
        - Powershell
        dir

MacOS - Terminal
        ls

Linux/Unix
      - Terminal
      - Shell script


OS (operating system)
 - File System
 - Device management
 - Memory management

"""
"""
1. write code to self-study truncate() /seek(),tell()
9. Write a Python program to count the number of lines in a text file.
10. Write a Python program to count the frequency of words in a file
13. Write a Python program to copy the contents of a file to another file .
"""