package main

import (
    "fmt"
    "time"
    "os"
)

func main() {
    var i int
    for {
        i++
        time.Sleep(1 * time.Second)
        wd, _ := os.Getwd()
        fmt.Printf("hello %s\n", wd)
        if i > 20 {
           goto exit
        }
    }
    exit:
}