1. Create second-greeting-service.go inside the services directory by executing the command $ cd services && touch second-greeting-service.go.
2. Copy the following content to second-greeting-service.go:

package main
import 
(
  "context"
  "log"
  "time"
  hello "../proto"
  "github.com/micro/go-micro"
)
type Say struct{}
func (s *Say) Hello(ctx context.Context, req *hello.Request, 
rsp *hello.Response) error 
{
  log.Print("Received Say.Hello request - second greeting
  service")
  rsp.Msg = "Hello " + req.Name
  return nil
}
func main() 
{
  service := micro.NewService
  (
    micro.Name("go.micro.service.greeter"),
    micro.RegisterTTL(time.Second*30),
    micro.RegisterInterval(time.Second*10),
  )
  service.Init()
  hello.RegisterSayHandler(service.Server(), new(Say))
  if err := service.Run(); err != nil 
  {
    log.Fatal("error starting service : ", err)
    return
  }
}

With everything in place, the directory structure should look like the following:

3. Move to the services directory and run the program with the following command:

$ go run second-greeting-service.go