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Linux Fundamentals Part 3 | TryHackMe: Walkthrough | INFOCODX

 

Linux Fundamentals Part 3

Discover a simplified and beginner-friendly documentation of the Linux Fundamentals Part 3 Room on TryHackMe, which includes a detailed step-by-step guide and answer key.


Room URL: Linux Fundamentals Part 3


Task 1 (Introduction)


Ready to begin? This area will guide you through flags, arguments, advanced filesystem information, and permissions!

Nothing more to do here but proceed to part 2!

Task 2 (Accessing Your Linux Machine Using SSH)


To proceed to task 3, it is crucial that you closely follow TryHackMe 's guide, as this task is highly specific to their platform.

TASK 3-: Terminal Text Editors

Create a file using Nano by using the command “nano new_file_name”.

# Create a file using Nano

Answer:  No answer needed

# Edit “task3” located in “tryhackme”’s home directory using Nano. What is the flag?

Answer: THM{TEXT_EDITORS}

Task 4 : General/Useful Utilities    

Type in the following command to start a python webserver on the default port     
  
command : python3 -m http.server 

now open a second terminal so we can copy the file over.

Type in the following command
  
command : wget HTTP://<MACHIEN_IP>:8000/.flag.txt

Once the file is copied over you can cat the output to the screen

command : cat .flag.txt

# What are the contents?

Answer :  THM{WGET_WEBSERVER}

Task 5 Processes 101   

Read all that is in this task and learn about the differences

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

Answer :  301

#If we wanted to cleanly kill a process, what signal would we send it?

Answer : SIGTERM

# Locate the process that is running on the deployed instance (MACHINE_IP). What flag is given?

Answer :  THM{PROCESSES}

# What command would we use to stop the service "myservice"?

Answer :  systemctl stop myservice

# What command would we use to start the same service on the boot-up of the system?    

Answer : systemctl enable myservice

# What command would we use to bring a previously backgrounded process back to the foreground?

Answer : fg

Task 6: Maintaining Your System: Automation    

To find the answer we need to take a look inside the crontab by typing the following command         

command :  crontab -a          

#When will the crontab on the deployed instance (MACHINE_IP) run?

Answer :   @reboot


Task 7 : Maintaining Your System: Package Management

Read all that is in this task and press complete

Task 8 : Maintaining Your System: Logs

Navigate to the login of apache by typing gin the following command
command : cd /var/log/apache2
# What is the IP address of the user who visited the site?
type in the following command to cat out the correct logging
command :cat access.log.1
# What file did they access?
Answer :  catsanddogs.jpg


TASK 9-: Conclusions & Summaries

The mission has been fulfilled! I trust that you have learned as much as I have while writing this summary. Thank you for being a dedicated reader.

"I welcome any comments or feedback you may have. Feel free to share your thoughts below. Thank you again for your time and consideration!"

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