Day 8 Shell Scripting Challenge🛠️📜

Task 1: Comments

In Bash scripts, comments are used to add explanatory notes or disable certain lines of code. Your task is to create a Bash script with comments explaining what the script does.

Script: comments_example.sh

#!/bin/bash

# This script demonstrates the use of comments in a Bash script
echo "Comments are helpful for explaining code."

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Task 2: Echo

The echo command is used to display messages on the terminal. Your task is to create a Bash script that uses echo to print a message of your choice.

Script: echo_example.sh

#!/bin/bash

# This script prints a message to the terminal
echo "Welcome to the Shell Scripting Challenge!"

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Task 3: Variables

Variables in Bash store data and can be referenced by their names. Your task is to create a Bash script that declares variables and assigns values to them.

Script: variables_example.sh

#!/bin/bash

# Declaring variables
name="Fauzeya"
age=24

# Displaying the values of the variables
echo "Name: $name"
echo "Age: $age"

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Task 4: Using Variables

Now that you have declared variables, let's use them to perform a simple task. Create a Bash script that inputs two variables (numbers) and prints their sum using those variables.

Script: sum_example.sh

#!/bin/bash

# This script calculates the sum of two numbers

# Declaring variables
num1=10
num2=20

# Calculating the sum
sum=$((num1 + num2))

# Displaying the result
echo "The sum of $num1 and $num2 is: $sum"

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Task 5: Using Built-in Variables

Bash provides several built-in variables that hold useful information. Your task is to create a Bash script that utilizes at least three different built-in variables to display relevant information.

Script: builtin_variables_example.sh

#!/bin/bash

# This script demonstrates the use of built-in variables

# Using built-in variables
echo "Script Name: $0"                # Name of the script
echo "Number of Arguments: $# "        # Number of arguments passed
echo "Current User: $USER"             # Current logged-in user

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Task 6: Wildcards

Wildcards are special characters used to perform pattern matching when working with files. Your task is to create a Bash script that utilizes wildcards to list all the files with a specific extension in a directory.

Script: wildcards_example.sh

#!/bin/bash

# This script lists all .txt files in the current directory

# Using wildcard to list .txt files
echo "Listing all .txt files in the current directory:"
ls *.txt

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Conclusion

Each of these tasks introduces fundamental concepts in Bash scripting. As you complete these scripts, you’ll become more comfortable with comments, echovariables, built-in variables, and wildcards. Keep practicing and experimenting with these concepts!

Let me know if you need further explanations for any of these tasks!😊