import os, subprocess

def launch_process(filename):
  ret = subprocess.call(['checkfile.exe', filename])
  if ret!=0: print "failed", filename

content = "dabale arroz a la zorra el abad\n" * 100
for i in range(1000):
  name = 'file%04d.txt' % i
  f = open(name, 'w')
  f.write(content)
  # f.flush()
  # os.fsync(f.fileno())
  f.close()
  launch_process(name)
  os.remove(name)
print "end."