Reading from USB serial port under Cygwin

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http://unix.stackexchange.com – I am actually using Cygwin, but it is my understanding that it responds to Unix commands so hopefully I am in the correct place. I have an Arduino hooked up via USB to my LapTop for data reading. I want to be able to simultaneously be able to output the serial port data to the shell for my viewing and also save all that data as a text file. Is there a command I can use to do this? (HowTos)