102-500: LPIC-1 Exam 102Demo

Question

What output does the following command sequence produce?

echo '1 2 3 4 5 6' | while read a b c; do  
echo result $c $b $a;  
done

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

Explanation

When read receives more fields than there are variables, it assigns the remaining input fields to the final variable. Therefore, a receives 1, b receives 2, and c receives 3 4 5 6; expanding $c $b $a prints result 3 4 5 6 2 1.

102-500: LPIC-1 Exam 102Demo

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Notes

Readiness

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