Given arr=(a b c d e), which command prints elements at even indexes only (0,2,4)?

hard🚀 Application Q9 of 15

Bash Scripting - Arrays

Given arr=(a b c d e), which command prints elements at even indexes only (0,2,4)?

Aecho ${arr[@]:0:5:2}

Becho ${arr[0]} ${arr[2]} ${arr[4]}

Cecho ${arr[@]:0:5}

Decho ${arr[@]::2}

Step-by-Step Solution

Solution:

Step 1: Identify elements at even indexes
Indexes 0,2,4 correspond to elements a, c, e.
Step 2: Check Bash syntax for skipping elements
Bash does not support step in slicing like Python; must access individually.
Final Answer:
echo ${arr[0]} ${arr[2]} ${arr[4]} -> Option B
Quick Check:
Access elements individually for non-contiguous indexes [OK]

Quick Trick: Bash slicing has no step; access elements individually [OK]

Common Mistakes:

MISTAKES

Master "Arrays" in Bash Scripting

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Bash Scripting Quizzes