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  • ... hard to say where to start. This code is a real mess. You are embedding two separate awk one-liners inside an awk script. Try formatting your own code with more whitespace and indentation, and you might see some of the problems. Commented Oct 14, 2016 at 0:51
  • Also, in shell, there must not be any spaces around the = in a variable assignment Commented Oct 14, 2016 at 0:52