#!/usr/bin/env python
# Generate sparse empty files.

import os, sys

def main(args):
	if len(args) < 2:
		print "Usage: mksparse size file [file ...]"
		return 1
	size = int(args[0])
	for file in args[1:]:
		fd = os.open(file, os.O_CREAT | os.O_WRONLY)
		os.lseek(fd, size - 1, 0)
		os.write(fd, '\0')
		os.close(fd)

if __name__ == "__main__":
	sys.exit(main(sys.argv[1:]))