Created this little Golang "script, maybe" to lookup the IP Address Not perfect, but yeah!

lookUpIp.go

package main

import (
	"flag"
	"fmt"
	"net"
	"os"
)

var ip string

func init() {
	flag.StringVar(&ip, "ip", "", "Checks for ip address")
	
	f := flag.Flag{
		Name:     "John-IP",
		Usage:    "go run [filename.go] -ip [command]",
		DefValue: "Looks up the IP Address - ",
	}
	fmt.Printf("NAME:\n \t %s \nUSAGE:\n \t %s \nOUTPUT: \n \t %s", f.Name, f.Usage, f.DefValue) // printing out the formatted strings
}

func main() {
	flag.Parse()
  
  // Still the same as using your if statement
	switch ip {
	case "yes":
		ip, err := net.LookupIP("localhost")
		if err != nil {
			fmt.Println(err.Error())
		}
		for i := range ip {
			fmt.Println(ip[i])
		}

	case "no":
		fmt.Println("Sorry, you picked no!")
		os.Exit(1)
	}
}

Will be updating it from time to time. ✔