import subprocess, os
from collections import Counter

counter = Counter()
for path in os.environ['PATH'].split(':'):
  for filename in os.listdir(path):
    output = subprocess.check_output(['file', '-b', os.path.join(path, filename)])
    filetype = ' '.join(output.decode('utf-8').split()[:2])
    counter[filetype] += 1

for filetype, count in counter.most_common():
  print(count, filetype)