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      Question

      Which command safely iterates over filenames that may

      contain spaces and newlines in a shell script?
      A for f in $(ls); do ... Correct Answer Incorrect Answer
      B for f in *; do ... Correct Answer Incorrect Answer
      C ls | while read f; do ... Correct Answer Incorrect Answer
      D for f in $(find . -name '*'); do ... Correct Answer Incorrect Answer
      E for f in \ls`; do ... Correct Answer Incorrect Answer

      Solution

      for f in expands to filenames preserving spaces;lsand command substitution break on whitespace/newlines. For arbitrary names including newlines,find -print0withwhile IFS= read -r -d ''is safest but among options,for f in ` is correct.

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