Shell Tutorials

This tutorial explores the head command in Linux, a utility designed to display the initial lines of a text file. We will cover its basic usage and introduce various parameters for enhanced functionality.

FIGlet is a utility for creating large characters out of ordinary screen characters. It's often used in terminal sessions to create eye-catching text, banners, or headers. This project will guide you through the process of using it to generate text, and customizing your output with different fonts.

The sysInfo.sh script is designed to display various system information to the user based on their selection. The script provides a menu for the user to choose from and uses switch case to display the output for the selected option. The information displayed includes currently logged users, shell directory, home directory, OS name and version, current working directory, number of users logged in, available shells in the system, hard disk information, CPU information, memory information, file system information, and currently running process.

In this challenge, we will write a script to determine whether a given file system or mount point is mounted. We will use the df command to check if the file system is mounted or not. If it's mounted, we will print the free space available in it, otherwise, we will print an error message.

In this lab, you will learn how to perform wildcard injection in Nmap to escalate privileges. You'll understand wildcards and practice Crontab Tar wildcard injection techniques to gain elevated access.

In this lab, you will learn about Cron Jobs and how they can be exploited for privilege escalation. You'll understand Cron syntax, overwrite crontab scripts to execute reverse shells, and give Bash SUID. This hands-on lab provides practical experience in Nmap security.

In this lab, you will learn the importance of input validation and code integrity by creating a simple script, simulating a command injection attack, implementing sanitization, and verifying the script's integrity with hashing.

In this lab, you will learn how to use the Ansible Shell module to execute shell commands on remote hosts. The Shell module is useful when you need to run shell commands that are not covered by existing Ansible modules or when you require more flexibility and control over the execution.

In this lab, you will learn how to use the Ansible Script module to execute custom scripts on remote hosts. The Script module allows you to run scripts written in any programming language on the target hosts, providing flexibility and customization options in your automation tasks.

Welcome to the Ansible Local Action Module Lab! In this lab, you will dive into the usage of the Ansible Local Action module. The Local Action module allows you to run tasks on the control machine where Ansible is being executed. This is useful when you need to perform operations locally, such as executing shell commands or running scripts.

In this lab, you will learn how to use the `watch` command in Linux to repeat commands and monitor their output. You'll explore basic usage, system resource monitoring, and advanced features for efficient command repetition and system observation within a Docker environment.

In this lab, you will learn how to use the `ls` command in Linux to list directory contents. You'll explore basic usage, viewing hidden files, sorting and filtering, and exploring files in other directories. This hands-on experience will enhance your Docker environment skills.

In this lab, you will learn how to manage environment variables in a Linux environment. You'll explore viewing, setting, and modifying variables, including the PATH. Discover how to use them in commands and scripts, and make them persistent for future sessions. This lab focuses on Docker environments.

In this project, you will learn how to create a simple typing game using a shell script. The game displays random characters on the screen, and your goal is to type them before they disappear. The game offers different modes with varying difficulty levels. You can choose to practice typing numbers, letters, a mixture of both, or even your own custom words.

This project will guide you through creating a task scheduler using a Bash script. The task scheduler allows you to schedule and manage tasks to be executed at specified intervals, such as hourly, daily, or weekly. The script provides options to list scheduled tasks, add new tasks, and remove existing tasks.

In this project, you will learn how to create a chess board using Bash scripting. By completing this project, you will gain experience in using nested loops, color printing, and shell scripting.

In this lab, you will learn how to set up Docker logging, stream container logs in real-time, and clear container logs to manage disk space. Gain practical experience with Docker log management techniques.

In this lab, you will learn to create and execute Bash scripts for RHEL system administration. You will begin by crafting simple scripts, then enhance them with system commands and make them executable. The lab progresses to using `for` loops for automating tasks like system information gathering and filtering command output with `grep` and regular expressions. Finally, you will build a comprehensive RHEL system information script, gaining practical skills in automating administrative tasks and leveraging powerful shell features.