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Shell Scripting Mastery: 5 Challenges - Recursive Functions, Bubble Sort CLI, and System Config Analysis

Are you ready to move beyond basic command-line usage and truly automate your Linux environment? The 'Shell' Learning Path is your systematic roadmap to mastering system administration and scripting. Designed specifically for beginners, this path offers hands-on, interactive exercises that transform theoretical knowledge into practical, job-ready skills. Forget passive video tutorials—we put you directly into a live command-line environment to solve real-world problems. Let's dive into five core challenges that will solidify your understanding of shell programming, from configuration file parsing to complex data sorting.

Search User in System Configuration

Search User in System Configuration

Difficulty: Intermediate | Time: 7 minutes

In this challenge, we will write a script to search for a user present in the system. We will fetch the usernames from the /etc/passwd file and search for the given name in the list. This challenge will help us understand how to work with configuration files and how to search for a specific string in a file using shell scripting.

Practice on LabEx → | Tutorial →

Right Angle Triangle Pattern

Right Angle Triangle Pattern

Difficulty: Beginner | Time: 5 minutes

In this challenge, we will learn how to create a pattern using loops in a shell script. We will take input from the user and generate a pattern of numbers in the format mentioned in the problem statement. This will help us understand the working of loops in shell scripts and how to execute a bash script.

Practice on LabEx → | Tutorial →

Recursive Function in Bash Scripting

Recursive Function in Bash Scripting

Difficulty: Beginner | Time: 5 minutes

In this challenge, we will learn about recursive functions in bash scripting. We will create a function that will print each argument passed to the function using recursion. We will pass command-line arguments to the script, and the script will call the function with the same arguments. Regardless of how many arguments are passed, we will only echo the first positional argument using recursion.

Practice on LabEx → | Tutorial →

Analyze Historical Commands

Analyze Historical Commands

Difficulty: Beginner | Time: 5 minutes

In this challenge, you will analyze the history of commands run on a Linux system.

Practice on LabEx → | Tutorial →

Bubble Sort Command-Line Sorting

Bubble Sort Command-Line Sorting

Difficulty: Beginner | Time: 5 minutes

Sorting is an essential operation in computer science that arranges data in a specific order. In this challenge, we will write a script that sorts a given set of numbers in ascending or descending order using the bubble sort algorithm. The script will take input from the user through command-line arguments and provide a menu for the user to choose the sorting order.

Practice on LabEx → | Tutorial →

These five challenges represent a crucial step in your journey from Linux user to proficient system administrator. By tackling configuration file parsing, mastering control flow with patterns, implementing advanced concepts like recursion, and applying algorithms like Bubble Sort, you are building a robust foundation in Shell scripting. Stop just running commands—start writing scripts that automate, analyze, and manage your systems efficiently. Dive into the LabEx interactive environment today and transform your command-line skills!

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