text: import subprocess
  from pathlib import Path
  from multiprocessing import Pool
  
  #------------------------------------------
  fd_out='./out/a00_sra_02_qc'
  fd_in='./out/a00_sra_01_fastq'
  
  ################################################
  Path(fd_out).mkdir(exist_ok=True, parents=True)
  l_fname=list(Path(fd_in).glob('*.fastq'))
  
  #-----------------------------------------
  def mainf(fname):
      cmd=f'fastqc {fname} -o {fd_out}'
      subprocess.run(cmd, shell=True)
      return
  
  #-----------------------------------------
  with Pool() as p: p.map(mainf, l_fname)
  