Learning Cybersecurity — OverTheWire Bandit taught me more about Linux in one hour than a week of reading

I am documenting every day of my cybersecurity learning journey publicly. This is Day 4. Previous entries are on my profile if you want to follow from the start. What was covered today Linux fundamentals through linuxjourney.com, 18 commands practiced in my Kali terminal, OverTheWire Bandit levels 0 through 3, and TryHackMe Linux Fundamentals Part 1. Why Linux specifically I want to write this down because I think it is worth stating clearly. 90% of servers on the internet run Linux. Every major cloud platform runs Linux underneath. Kali Linux — the operating system I use for all my security work — is built on Linux. When a penetration tester gains initial access to a system, it is almost always a Linux shell they end up in. Linux is not background knowledge in cybersecurity. It is the main environment. Knowing it well is the difference between being able to do the actual work and just knowing the theory. The commands that surprised me the most I expected Linux to be harder to learn th