findzero.go

package main

import (
	"fmt"
	"os"
	"path/filepath"
)

func main() {
	filepath.Walk(os.Args[1],
		func(path string,
			info os.FileInfo,
			err error) error {
			if err == nil && !info.IsDir() && info.Size() == 0 {
				fmt.Println(path)
			}
			return err
		})
}