CompTIA Linux+ Powered by LPI (LX0-104) — Question 1

What output will the following command sequence produce?
echo '1 2 3 4 5 6' | while read a b c; do echo result: $c $b $a; done

Answer options

• A. result: 3 4 5 6 2 1
• B. result: 1 2 3 4 5 6
• C. result: 6 5 4
• D. result: 6 5 4 3 2 1
• E. result: 3 2 1

Correct answer: A

Explanation

The command uses a while loop to read three variables from the input, assigning them as a, b, and c. Since the input is '1 2 3 4 5 6', the last three numbers assigned to c, b, and a are 3, 4, and 5 respectively, resulting in 'result: 3 4 5 6 2 1' as the output. The other options do not match this order or content.