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      Question

      Extended globbing in bash

      allows:
      A Advanced regex inside scripts Correct Answer Incorrect Answer
      B Case conversion of variables Correct Answer Incorrect Answer
      C String slicing with substring indices Correct Answer Incorrect Answer
      D Pattern-based filename matching with operators like @(pattern) Correct Answer Incorrect Answer
      E Arithmetic evaluation Correct Answer Incorrect Answer

      Solution

      Extended globbing (enabled with shopt -s extglob) allows advanced pattern matching, e.g., ls !(*.txt) excludes .txt files.

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