This manual course content can be used by learners preparing for other certifications including Linux+ and the Linux Professional Institute (LPI) Certification. The main focus of this manual, though, will be to provide real life, hands‐on solutions that commonly affect Technical and Mid Level IT Managers. This manual is intended for the following groups of professionals: Technical IT professionals (System Administrators, Network Administrators and Technical Specialists); IT Security Professionals; Database Administrators; Computer Programmers and Software Developers; IT Consultants; and any other ICT professional with interest in Linux and Open Source Software. // This manual will assume that the learner has previous computer knowledge, but not necessarily in Linux. The learner should have prior knowledge on the use of computers at a basic level. Programmers, novice System Administrators, and new users of Linux looking for comprehensive Linux instructions will find this manual of benefit.