Intermediate Linux Course | TryHackMe Linux Strength Training

The post provides an in-depth walkthrough of a TryHackMe room focused on Linux Strength Training, targeting beginner to intermediate users.

Offensive Security Certified Professional Study Notes and Guide

This is a 1562 pages of notes that will guide and help you prepare for and pass the OSCP exam taking into account the…

HackTheBox Certified Penetration Testing Specialist (CPTS) Study Notes

Table of content:- About the CPTS exam- Tips to prepare- Recommended HackTheBox machines to practice- Information…

Introduction

The room focuses on improving Linux command-line skills, specifically:

• File searching with find.
• Grepping content.
• Working with encryption, decryption, and hashing.
• Exploring SQL databases.

Target Audience: Users familiar with Linux Fundamentals who want to transition to intermediate concepts.

Tasks and Key Concepts

1. File Searching Using the find Command

• Command Breakdown:
• Search files in a directory: find /path -type f.
• Search based on user: find /path -user username.
• Search files of specific size: find /path -size 52k.

Practical Demonstrations:

• Locate a file named readme_if_stuck.txt

find /home/dobson -type f -name "readme_if_stuck.txt"

Search for files modified on a specific date:

find /path -type f -newermt "2016-09-11" ! -newermt "2016-09-13"

Use quotes for file names with spaces.

Escape spaces in directories using backslashes (\).

2. Reading and Searching File Content

• Using less:
• View large files in chunks.
• Search for keywords within the file using /keyword.

Example:

• Search for the word “keyword” in a file:bashCopy code

less filename 
/keyword

3. Moving and Renaming Files

• Command for Moving Files:

mv /source/* /destination/

Renaming Files or Folders:

• Standard renaming:

mv old_name new_name

Handling special characters (e.g., names starting with -):

mv -- -old_name new_name

4. Transferring Files Using scp

• Transfer a file to a remote machine using SSH:

scp /path/to/file username@ip_address:/destination_path

Examples and Scenarios

Find files owned by a specific user and of a particular size:

Example: find /home/francis -type f -user francis -size 52k.

Search for specific text in logs:

grep -irl "keyword" /home/dobson/chat_logs/

Working with modified files:

• Locate files modified between two dates:

find /home/workflows -type f -newermt "2016-09-11" ! -newermt "2016-09-13"

General Takeaways

• Command Mastery:
• The room is ideal for honing skills in navigating and manipulating Linux systems.
• Includes practical examples and hands-on tasks for real-world scenarios.

Practical Application:

• Tools like find, grep, and scp are indispensable for file management and system administration.

Next Steps:

• Dive deeper into topics like encryption, decryption, and working with SQL databases in subsequent tasks.

TryHackMe Linux Strength Training | Room Answers

Room answers can be found here.

Video Walkthrough