🎯 Goal

Finish Linux Fundamentals Part 3 and understand how Linux systems are actually managed day-to-day (editors, processes, services, automation, logs).

✅ What I Did

  • Completed TryHackMe – Linux Fundamentals Part 3

  • Connected to target machine via SSH

  • Used Nano to create and edit files

  • Learned VIM exists and will eventually hurt me

  • Downloaded files using wget

  • Transferred files using scp

  • Served files via:

    python3 -m http.server

  • Inspected running processes with:

    ps ps aux top

  • Managed services using systemctl

  • Backgrounded and foregrounded processes (&, Ctrl+Z, fg)

  • Created scheduled tasks using cron

  • Learned how APT repositories and GPG keys work

  • Explored system and service logs in /var/log

✅ What Worked

  • SSH access and AttackBox workflow

  • Python HTTP server for quick file hosting

  • systemctl finally clicked conceptually

  • Cron syntax makes sense with generators

  • Logs clearly show why Linux is admin-friendly

❌ What Didn’t

  • wget failed multiple times due to wrong URLs / inactive servers

  • SSH connection errors early on (IP/availability issues)

  • Still slow reading ps aux output efficiently

  • Vim remains hostile territory

🧠 Key Takeaways

  • Linux administration ≠ just commands, it’s process control

  • systemd, cron, and logs are core sysadmin knowledge

  • Backgrounding processes is a real productivity tool

  • Logs are critical for both defense and offense

  • Package management is about trust, not convenience

❓ Questions

  • When should I switch from Nano to Vim seriously?

  • What logs matter most during incident response?

  • How deep should cron knowledge go before scripting takes over?