golang flag使用示例

package main

import (

"fmt"

"flag"

)

func main(){

data_path := flag.String("D","/home/manu/sample/","DB data path")

log_file := flag.String("l","/home/manu/sample.log","log file")

nowait_flag :=flag.Bool("W",false,"do not wait until operation completes")

flag.Parse()

var cmd string = flag.Arg(0);

fmt.Printf("action : %s\n",cmd)

fmt.Printf("data path: %s\n",*data_path)

fmt.Printf("log file : %s\n",*log_file)

fmt.Printf("nowait : %v\n",*nowait_flag)

fmt.Printf("-------------------------------------------------------\n")

fmt.Printf("there are %d non-flag input param\n",flag.NArg())

for i,param := range flag.Args(){

fmt.Printf("#%d :%s\n",i,param)

}

}