[Solved] Given this user data script:#!/bin/bash echo "Instance ID: $(curl -s http://169.254.169.254/latest/meta-data/instance-id)" > /tmp/instance.txtWhat will be the content of /tmp/instance.... | AWS

AWS - EC2 Fundamentals

Given this user data script:

#!/bin/bash
echo "Instance ID: $(curl -s http://169.254.169.254/latest/meta-data/instance-id)" > /tmp/instance.txt

What will be the content of /tmp/instance.txt after instance launch?

AInstance ID: http://169.254.169.254/latest/meta-data/instance-id

BInstance ID: curl command

CInstance ID: i-1234567890abcdef0

DInstance ID: $(curl -s http://169.254.169.254/latest/meta-data/instance-id)

Step-by-Step Solution

Solution:

Step 1: Understand command substitution in bash
The $(curl ...) runs the curl command and inserts its output into the string.
Step 2: Recognize metadata instance-id output
The curl command fetches the actual instance ID like i-1234567890abcdef0.
Final Answer:
Instance ID: i-1234567890abcdef0 -> Option C
Quick Check:
$(curl ...) inserts metadata value [OK]

Quick Trick: $(curl ...) runs command and inserts output in bash [OK]

Common Mistakes:

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