Chapter 24: Bash View End (tail)
What does tail actually do? (super simple first) tail = shows the last part of a file (or from pipe/input). By default: Shows the last 10 lines of a file Very fast – doesn’t...
Author: web-admin
Chapter 25: Bash View Start (head)
What does head actually do? (super simple first) head = shows the first part (the “head”) of a file or input. By default: Shows the first 10 lines of a file Very fast –...
Chapter 26: System Monitoring
What is System Monitoring? (super simple first) System monitoring means watching and checking how your Linux computer (or server) is working right now and over time. You keep an eye on important things like:...
Chapter 27: Bash Process Status (ps)
What is ps? (super simple first) ps = Process Status It shows a snapshot (photo at this moment) of the processes (running programs/tasks) on your Linux system. Every program, script, service, browser tab, background...
Chapter 28: Bash List Processes (top)
What is top? (super simple first) top = shows a live, updating view of all running processes on your Linux system + summary information about CPU, memory, swap, tasks, load average. It’s the most...
Chapter 29: Bash Disk Space (df)
What does df actually do? (super simple first) df = disk free It shows you how much disk space is used and how much is still free on your mounted filesystems (hard drives, SSDs,...
Chapter 30: Bash Directory Usage (du)
What does du actually do? (super simple first) du = disk usage It tells you how much space each folder (and its contents) is using on your disk. Key difference from df: df →...
Chapter 31: Bash Memory Usage (free)
What does free actually do? (super simple first) free = shows you memory usage statistics (RAM + swap) in a very quick, readable way. It tells you: How much total RAM your computer has...
Chapter 32: Bash Terminate kill
What does kill actually do? (super simple first) kill sends a signal (a special message) to one or more running processes (programs/tasks) by their PID (Process ID). The default signal is SIGTERM (terminate nicely)...
Chapter 33: Bash uptime
What does uptime actually do? (super simple first) uptime is one of the quickest and most useful commands in Linux. It shows you three very important pieces of information in one short line: Current...
