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    Question

    Which command will read input line-by-line from a file

    in a shell script?
    A while read line; do ... done < filename Correct Answer Incorrect Answer
    B cat filename | while read line Correct Answer Incorrect Answer
    C Both A and B Correct Answer Incorrect Answer
    D readline filename Correct Answer Incorrect Answer
    E read < filename Correct Answer Incorrect Answer

    Solution

    Both syntax styles use the read command inside a loop to process each line of a file sequentially.

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