Support writing the ids back to the file

go/blog/blog.go

	"crypto/md5"
	"crypto/rand"
	"encoding/hex"
	"flag"
	"fmt"
	"html/template"
	"io"
	Type    string `yaml:"type"`
}
var flags struct {
	writeBack bool
}
func init() {
	flag.BoolVar(&flags.writeBack, "write-back", false, "Rewrite the YAML file with the generated ids")
}
func main() {
	flag.Parse()
	f, err := os.Open("blog.yaml")
	if err != nil {
		exit(err)
	}
	fmt.Printf("\n</body>\n</html>\n")
	if flags.writeBack {
		out, err := yaml.Marshal(posts)
		if err != nil {
			exit(err)
		}
		ioutil.WriteFile("blog.yaml", out, 0664)
	}
}
var funcs = template.FuncMap{