LPI Linux Essentials Certification Topic 1: The Linux Community and a Career in Open Source 1.1 Linux Evolution and Popular Operating Systems 1.2 Major Open-Source Applications 1.3 Open-Source Software and Licensing 1.4 ICT Skills and Working in Linux Topic 2: Finding Your Way on a Linux System 2.1 Command Line Basics 2.2 Using the Command Line to Get Help 2.3 Using Directories and Listing Files 2.4 Creating, Moving, and Deleting Files Topic 3: The Power of the Command Line 3.1 Archiving Files on the Command Line 3.2 Searching and Extracting Data from Files 3.3 Turning Commands into a Script Topic 4: The Linux Operating System 4.1 Choosing an Operating System 4.2 Understanding Computer Hardware 4.3 Where Data Is Stored 4.4 Your Computer on the Network Topic 5: Security and File Permissions 5.1 Basic Security and Identifying User Types 5.2 Creating Users and Groups 5.3 Managing File Permissions and Ownership 5.4 Special Directories and Files