[Solved] What is the output of this Bash script?tools=("hammer" "wrench" "screwdriver") tools+=("pliers") unset tools[1] echo "${tools[@]}" | Bash Scripting

Bash Scripting - Arrays

What is the output of this Bash script?

tools=("hammer" "wrench" "screwdriver")
tools+=("pliers")
unset tools[1]
echo "${tools[@]}"

Ahammer wrench screwdriver pliers

Bhammer pliers screwdriver

Chammer pliers

Dhammer screwdriver pliers

Step-by-Step Solution

Solution:

Step 1: Add "pliers" to the array
After tools+=("pliers"), array is [hammer, wrench, screwdriver, pliers].
Step 2: Remove element at index 1
unset tools[1] removes "wrench", leaving indices 0,2,3.
Step 3: Print all elements
Printing ${tools[@]} outputs existing elements in order: hammer screwdriver pliers.
Final Answer:
hammer screwdriver pliers -> Option D
Quick Check:
Unset removes element, echo prints remaining [OK]

Quick Trick: Unset removes element but does not reindex array [OK]

Common Mistakes:

MISTAKES

Master "Arrays" in Bash Scripting

9 interactive learning modes - each teaches the same concept differently

More Bash Scripting Quizzes

What is the output of this Bash script?