until loop in Bash Scripting - Mini Project: Build & Apply

Counting with an until Loop in Bash

📖 Scenario: You are creating a simple bash script that counts numbers from 1 up to a limit. This is useful when you want to repeat a task a certain number of times.

🎯 Goal: Build a bash script that uses an until loop to count from 1 to 5 and print each number.

📋 What You'll Learn

Create a variable count starting at 1

Create a variable limit set to 5

Use an until loop that runs until count is greater than limit

Inside the loop, print the current count value

Increment count by 1 inside the loop

💡 Why This Matters

🌍 Real World

Counting loops are common in scripts that automate tasks like backups, monitoring, or repeated checks.

💼 Career

Understanding loops in bash scripting is essential for system administrators and DevOps engineers to automate repetitive tasks efficiently.

1

Set up the starting count variable

Create a variable called count and set it to 1.

Bash Scripting

# Create a variable called count and set it to 1
# Your code here

Need a hint?

Use count=1 to set the variable.

2

Set the limit variable

Create a variable called limit and set it to 5.

Bash Scripting

count=1
# Create a variable called limit and set it to 5
# Your code here

Need a hint?

Use limit=5 to set the maximum count.

3

Write the until loop to count

Write an until loop that runs until count is greater than limit. Inside the loop, print the value of count and then increase count by 1.

Bash Scripting

count=1
limit=5
# Write an until loop that runs until count is greater than limit
# Inside the loop, print count and increment count by 1
# Your code here

Need a hint?

Use until [ "$count" -gt "$limit" ] to start the loop. Use echo "$count" to print. Use count=$((count + 1)) to increase count.

4

Run the script to see the output

Run the script to print numbers from 1 to 5 using the until loop.

Bash Scripting

count=1
limit=5
until [ "$count" -gt "$limit" ]
do
  echo "$count"
  count=$((count + 1))
done
# Run the script to see the output

Need a hint?

Run the script in your terminal. You should see numbers 1 to 5 printed each on a new line.