Week 4 – Data Representation, Conversions and Unix file permissions

I. Introduction to Data Representation

• Definition of data representation and its importance in computing
• Overview of different number systems: binary, octal, decimal, and hexadecimal

II. Number Conversions

• How to convert between different number systems
• Tools and techniques for converting numbers

III. Unix File Permissions

• Introduction to Unix file permissions and their role in security
• Understanding the rwx notation and how to set file permissions using the chmod command
• Special permissions such as suid, sgid, and sticky bit
• Best practices for managing file permissions in Unix systems