Bash Scripting - Arrays
Given the Bash array declaration
numbers=(10 20 30 40), what is the output of echo ${numbers[3]}?Given the Bash array declaration numbers=(10 20 30 40), what is the output of echo ${numbers[3]}?
medium📝 Command Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the element at index 3
Arraynumbershas elements: index 0=10, 1=20, 2=30, 3=40.Step 2: Access element at index 3
${numbers[3]}returns the element at index 3, which is 40.Final Answer:
40 -> Option AQuick Check:
numbers[3] = 40 [OK]
Quick Trick: Index 3 means fourth element, here 40 [OK]
Common Mistakes:
MISTAKES- Confusing index 3 with value 30
- Expecting error for valid index
- Using 1-based indexing
- Printing entire array instead of element
Master "Arrays" in Bash Scripting
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