code: def exec_cmd(cmd):
      """Run a command in a subprocess.
      Args:
          cmd: command line to be executed.
      Return:
          int, the return code.
      """
      try:
          retcode = subprocess.call(cmd, shell=True)
          if retcode < 0:
              logging.info(f"Child was terminated by signal {retcode}")
      except OSError as e:
          logging.info(f"Execution failed: {e}")
          retcode = -999
      return retcode
  
file_path: TTS/TTS/encoder/utils/prepare_voxceleb.py
imports: import hashlib
  import os
  import subprocess
  import sys
  import zipfile
  import pandas
  import soundfile
  from absl import logging
label_desc: Use image node_id 2 for calling a global function with example usage: exec_cmd(cmd) and returns: retcode