text: import os
  from subprocess import Popen, PIPE
  
  root, dirs, files = next(os.walk('D:\\MySourceCodes\\Projects-Python\\Steganalysis-By-Frame\\SteganalysisDatasets\\NoiseData\Hide4PGP\\100\\'))
  secret_filename = '100.txt'
  for file in files:
      if file.lower().endswith('.wav'):
          p = Popen('hide D:\\MySourceCodes\\Projects-Python\\Steganalysis-By-Frame\\SteganalysisDatasets\\SecretFile\\' + secret_filename + ' ' +
                    'D:\\MySourceCodes\\Projects-Python\\Steganalysis-By-Frame\\SteganalysisDatasets\\NoiseData\Hide4PGP\\100\\' + file, shell=True,
                    stdout=PIPE, stderr=PIPE)
          out, err = p.communicate()
          print(file)
          if err != '':
              print(err)