Linux Fundamentals: Linux Fundamentals Part 3 (TryHackMe)

In this article, I will write a write-up for the Linux Fundamentals Part 3 that covers the Deploy Your Linux Machines, Terminal Text Editors, General/Useful Utilities, and Processes 101, Maintaining Your System: Automation, Maintaining Your System: Package Management, and Maintaining Your System: Logs.

1. Edit "task3" located in "tryhackme"'s home directory using Nano. What is the flag? THM{TEXT_EDITORS}

   

2. Ensure you are connected to the deployed instance (MACHINE_IP)

Now, use Python 3's "HTTPServer" module to start a web server in the home directory of the "tryhackme" user on the deployed instance.

Download the file http://MACHINE_IP:8000/.flag.txt onto the TryHackMe AttackBox. Remember, you will need to do this in a new terminal. What are the contents? THM{WGET_WEBSERVER}

3. If we were to launch a process where the previous ID was "300", what would the ID of this new process be? 301

4. If we wanted to cleanly kill a process, what signal would we send it? SIGTERM

5. Locate the process that is running on the deployed instance (MACHINE_IP). What flag is given? THM{PROCESSES}

   

6. What command would we use to stop the service "myservice"? systemctl stop myservice

7. What command would we use to start the same service on the boot-up of the system? systemctl enable myservice

8. What command would we use to bring a previously backgrounded process back to the foreground? fg

9. When will the crontab on the deployed instance (MACHINE_IP) run? @reboot

using the crontab -e crontab -edit it opens this which shows that there’s an ongoing on @reboot process

10. What is the IP address of the user who visited the site? 10.9.232.111

11. What file did they access? catsanddogs.jpg

Thank you for reading my article. Please leave any questions or comments on improving my learning journey and the THM challenges. We can also connect more on LinkedIn or X.