A book about the command line for humans.
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  1. - At SparkFun, we do a lot of stuff over serial.
  2. - Once upon a time, most of the interfaces to Really Serious Computers -- the
  3. ones at universities and in government -- worked like debugging Arduino
  4. code over a serial port.
  5. - The computer prints stuff, you type stuff to the computer, the computer
  6. prints stuff. It's just text in a box.
  7. - Even once we got PCs in our houses, a lot of the interfaces shared this
  8. heritage. Remember DOS? Ever have to fire up cmd.exe on Windows?