根据需要生成指定的UUID

generate_uuid.go

package main

import (
	"flag"
	"fmt"
	"log"

	uuid "github.com/nu7hatch/gouuid"
)

func generateUUID() (id string, err error) {
	var uid *uuid.UUID
	uid, err = uuid.NewV4()
	if err != nil {
		log.Fatal("generate uuid error.", err)
		return
	}
	id = uid.String()
	return
}

var (
	count = flag.Int("num", 1, "Usage: generate_uuid -num=?")
)

func main() {
	flag.Parse()

	for i := 0; i < *count; i++ {
		uid, err := generateUUID()
		if err != nil {
			return
		}
		fmt.Println(uid)
	}
}