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badblocks

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badblocks -V (return code: 1)

badblocks: invalid option -- '-'
Usage: badblocks [-b block_size] [-i input_file] [-o output_file] [-svwnf]
       [-c blocks_at_once] [-d delay_factor_between_reads] [-e max_bad_blocks]
       [-p num_passes] [-t test_pattern [-t test_pattern [...]]]
       device [last_block [first_block]]

badblocks --help (return code: 1)

badblocks: invalid option -- '-'
Usage: badblocks [-b block_size] [-i input_file] [-o output_file] [-svwnf]
       [-c blocks_at_once] [-d delay_factor_between_reads] [-e max_bad_blocks]
       [-p num_passes] [-t test_pattern [-t test_pattern [...]]]
       device [last_block [first_block]]

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