golang flag 用法示例

file.go

package main
import "flag"
import "fmt"
import "os"
func main() {
 
  if len(os.Args) < 2 {
   fmt.Println("too less param")
   return
  }
 
  var ip = flag.Int("flagname", 1234, "help message for flagname")
  var real string
  flag.StringVar(&real, "dir", "this is a test","help msg for dir")
  flag.Parse()
  fmt.Println(*ip)
  fmt.Println(real)
}

go build file.go

./file -flagname 3333 -dir ccccccccccccccc

//out put 

// 3333

//ccccccccccccccc

来源：CSDN

作者：frozen_flash

链接：https://blog.csdn.net/u011363248/article/details/19192017