Chapter 1
System Management
Course: Comptia Linux Xk0 006
Subject: Comptia Linux Xk0 006
Chapter: Services And User Management
This lesson focuses on managing running processes and Linux system services. Every task a Linux system performs runs as a process, so understanding how to view, monitor, prioritize, and stop them is central to keeping a system healthy and responsive. Learners also meet systemd, the modern system that starts and controls services, examines logs, and automates recurring work. These skills are essential for administering reliable Linux servers in cloud, hybrid, and enterprise environments.
Lesson Objectives
- Understand Linux processes, their states, and how to view and monitor them.
- Manage foreground and background jobs and terminate processes safely.
- Adjust process priorities and schedule tasks with cron and at.
- Control services, logs, and timers using systemd tools.
Linux Processes
A process is a running instance of a program. When you launch a program, the Linux kernel loads it into memory and begins executing its instructions, and that active, executing copy is the process. A single program can have many processes running at once; for example, opening several terminal windows creates several processes of the same shell program. Because everything the system does, from user commands to background services, runs as a process, understanding processes is the starting point for managing a Linux system.