Why sysadmin scripts automate operations in Bash Scripting - See It in Action

Why sysadmin scripts automate operations

📖 Scenario: You are a system administrator who wants to save time and avoid mistakes by automating repetitive tasks on your server.

🎯 Goal: Build a simple bash script that automates checking disk space and alerts if usage is above a set limit.

📋 What You'll Learn

Create a variable with disk usage data

Set a threshold value for disk usage

Use a conditional statement to check if disk usage exceeds the threshold

Print an alert message if the threshold is exceeded

💡 Why This Matters

🌍 Real World

Sysadmins use scripts like this to monitor servers and avoid downtime by catching problems early.

💼 Career

Knowing how to write simple automation scripts helps sysadmins save time and reduce errors in daily tasks.

1

Set up disk usage data

Create a variable called disk_usage and set it to the value 85 to represent disk usage percentage.

Bash Scripting

# Create a variable called disk_usage and set it to 85
# Your code here

Need a hint?

Use disk_usage=85 to assign the value.

2

Set the usage threshold

Create a variable called threshold and set it to 80 to represent the disk usage limit.

Bash Scripting

disk_usage=85
# Create a variable called threshold and set it to 80
# Your code here

Need a hint?

Use threshold=80 to assign the value.

3

Check if disk usage exceeds threshold

Use an if statement to check if disk_usage is greater than threshold. Inside the if, write a command to print "Disk usage is above threshold!".

Bash Scripting

disk_usage=85
threshold=80
# Use if statement to check if disk_usage > threshold
# Print alert message inside if
# Your code here

Need a hint?

Use if [ "$disk_usage" -gt "$threshold" ] and echo inside.

4

Display the alert message

Run the script to print the alert message if disk usage is above the threshold.

Bash Scripting

disk_usage=85
threshold=80
if [ "$disk_usage" -gt "$threshold" ]; then
    echo "Disk usage is above threshold!"
fi
# Run the script to display the message
# Your code here

Need a hint?

Run the script and check the output.