Simple Go Webserver

gistfile1.txt

package main

import (
        "flag"
        "fmt"
        "log"
        "net/http"
)

var argPort = flag.Int("port", 8080, "port to listen")

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

        addr := fmt.Sprintf(":%v", *argPort)
        log.Fatal(http.ListenAndServe(addr, nil))
}