package main import ( "fmt" "math/rand" "time" ) func main() { for i := 0; i < 10; i++ { dur := time.Duration(rand.Intn(1000)) * time.Millisecond fmt.Printf("Sleeping for %v\n", dur) // Sleep for a random duration between 0-1000ms time.Sleep(dur) } fmt.Println("Done!") }