[haschool] Finally, a working testsuite.

[Jason Dusek]

  Running an external command is not quite as straightforward in
  Haskell as it is in, for example, Ruby.

    http://github.com/jsnx/haschool/blob/91bc831b38551058d1a24b019b4dfb1d9d7f036d/Noisebridge/Session%2002/core-utils/test/Cat.hs

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Jason Dusek