XK0-006 Automation, Orchestration, and Scripting Practice Question
A DevOps engineer is writing a Bash script that iterates over all items in an array. The array is declared as 'fruits=("apple" "banana" "cherry")'. Which loop correctly iterates over each element?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
for fruit in "${fruits[@]}"; do ... done
To iterate over array elements, use "${fruits[@]}" with quotes. The @ expands to all elements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
for fruit in "${fruits[@]}"; do ... done
Why this is correct
Properly iterates over each array element as separate words, even if they contain spaces.
- ✗
for (i=0; i<${#fruits[@]}; i++); do ... done
Why it's wrong here
This syntax is for C-style loops, which works but is not the most straightforward for simple iteration.
- ✗
for fruit in ${fruits[*]}; do ... done
Why it's wrong here
Without quotes, elements with spaces may be split; also * expands to all elements but with IFS splitting.
- ✗
for fruit in $fruits; do ... done
Why it's wrong here
$fruits expands to only the first element.
Go deeper
Related to this question
Learn chapter
Managing Storage and File Systems
Key term
Bash
Bash is a command-line interpreter that lets users interact with an operating system by typing text commands instead of clicking icons.
Key term
Bash script
A Bash script is a text file containing a sequence of commands for the Unix shell Bash, allowing users to automate repetitive tasks and streamline system administration on Linux and macOS.
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