In Bash, given an array tools=(hammer wrench screwdriver), which command prints the last element without using a fixed index?

easy🧠 Conceptual Q1 of 15

Bash Scripting - Arrays

In Bash, given an array tools=(hammer wrench screwdriver), which command prints the last element without using a fixed index?

Aecho ${tools[-1]}

Becho ${tools[3]}

Cecho ${tools[@]: -1}

Decho ${tools[last]}

Step-by-Step Solution

Solution:

Step 1: Understand negative indexing
Bash arrays do not support negative indices like Python, so ${tools[-1]} won't work as expected.
Step 2: Use slicing to get last element
The syntax ${tools[@]: -1} extracts the last element by slicing from the end.
Final Answer:
echo ${tools[@]: -1} -> Option C
Quick Check:
Run the command and verify it prints 'screwdriver' [OK]

Quick Trick: Use slicing with space before -1 to get last element [OK]

Common Mistakes:

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