rm - remove directory entries

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−f − do not prompt the user for each file, and do not consider it an error if a file cannot be removed

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−i − prompt the user for each file.

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−P − a no−op, for compatibility. So implementations would overwrite files with random data

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−r − same as −R

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−R − remove directories recursively

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−v − show the name of each file after it is removed