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How Are Devices Represented In Unix? |
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Answer» All devices are represented by files called special files that are located in/dev DIRECTORY. Thus, device files and other files are NAMED and accessed in the same way. A 'regular FILE' is just an ordinary data file in the disk. A 'block special file' represents a device with CHARACTERISTICS SIMILAR to a disk (data transfer in terms of blocks). A 'character special file' represents a device with characteristics similar to a keyboard (data transfer is by stream of bits in sequential order). All devices are represented by files called special files that are located in/dev directory. Thus, device files and other files are named and accessed in the same way. A 'regular file' is just an ordinary data file in the disk. A 'block special file' represents a device with characteristics similar to a disk (data transfer in terms of blocks). A 'character special file' represents a device with characteristics similar to a keyboard (data transfer is by stream of bits in sequential order). |
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