title: Tshark exit codes
body: <p>I'm currently working with tshark using python subprocess and I want to handle errors in the child process currently.</p>
  
  <p>I can get the sub-process exit code via python's subproccess 'returncode' field, but I can't fined any documentation of tshark exit codes.</p>
  
  <p>I already figured out that 0 means success (no surprise) and 2 means corrupt or unsupported file.
  But where there is 0 and 2 there is usually a 1, and there should be more codes.</p>
  
  <p>Does anyone know were I can fined a list of thsark's possible error codes and causes?</p>