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Linux top 50 cmd - Dd

The dd command converts file formats. For example, to copy a boot image to a disk (assuming the device name for the disk is /dev/fd0), you would issue the command dd if=<filename> of-/dev/fd0 obs=18k where filename would be something like BOOT0001.img, of is the object format (what you are copying to), and obs is the output block size.