docs: def pipe_shell_cmds(shell_CMDs):
      '''
          shell_CMDs = {}
          shell_CMDs[1] = 'netstat -n'
          shell_CMDs[2] = "awk {'print $6'}"
      '''
      len = shell_CMDs.__len__()
      p = {}
      p[1] = subprocess.Popen(shlex.split(shell_CMDs[1]), stdout=subprocess.PIPE,stderr=subprocess.PIPE)
      for i in range(2,len):
          p[i] = subprocess.Popen(shlex.split(shell_CMDs[i]), stdin=p[i-1].stdout, stdout=subprocess.PIPE,stderr=subprocess.PIPE)
      if(len > 1):
          p[len] = subprocess.Popen(shlex.split(shell_CMDs[len]), stdin=p[len-1].stdout, stdout=subprocess.PIPE,stderr=subprocess.PIPE)
      result = p[len].communicate()
      if(len > 1):
          for i in range(2,len+1):
              returncode = p[i].wait()
      else:
          returncode = p[len].wait()
      return(result)