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The blog article delves into using the Linux `dd` command for managing input/output operations on serial ports like `/dev/ttyUSB0`. Originally for data copying and conversion, `dd` can efficiently handle reading from and writing to serial devices once they are configured using `stty` for specific settings such as baud rate and parity. It includes commands for setting up and executing these operations, with additional examples for continuous reading and file transfers to a serial device, underscoring `dd`'s versatility in direct hardware interactions.