#!/usr/bin/python2
import os
import sys
import json
path = os.statvfs(sys.argv[1])
size = path.f_bsize * path.f_blocks
free = path.f_bsize * path.f_bavail
used = size - free
percent = (float(used) / float(size)) * 100
print(json.dumps({"size": size, "used": used, "free": free, "percent": round(percent, 2)}))