Пример компиляции приложения Golang

$ cd ~/tmp/
$ vi ./main.go

package main

import (
	"fmt"
	"net/http"
)

func main() {
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintln(w, "Hello, world!")
	})

	http.ListenAndServe(":3000", nil)
}

$ curl localhost:3000
Hello, world!

^C

$ go build ./main.go
$ ./main

$ curl localhost:3000
Hello, world!