In the first part of the course, you will learn what system administration is, what the role of a system administrator involves, and what tasks they perform. You will begin to explore basic Linux commands and complete your first independent assignments to practice these commands.
Welcome to the first lesson of the introductory module on Linux system administration! Here, we will discuss the core functions and responsibilities of a system administrator, clarify what a “system” is, what components IT infrastructure consists of, and how to manage its elements.
The material is presented so that even a beginner with no technical background can understand the basics. It is recommended to carefully study the examples to start thinking like a professional.
System administration is not just about configuring computers. It is a comprehensive activity involving the management, configuration, and maintenance of servers and computer systems that ensure the operation of an organization’s IT infrastructure.
The key responsibility of a system administrator is to maintain the stability, availability, efficiency, and security of all infrastructure components:
Regardless of the specific field (servers, databases, mail), an administrator must:
In the context of system administration, a system is the entire set of components that make up the IT infrastructure—from physical equipment to software services. Key levels include:
A server operating system is a key infrastructure component that manages resources, launches services, enforces security, and separates access rights.
This course focuses primarily on Linux as the most popular and flexible server platform.