staticserve.go

package main

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

func main() {
	var port int
	flag.IntVar(&port, "port", 8080, "port to serve on")
	flag.IntVar(&port, "p", 8080, "port to serve on (shorthand)")
	flag.Parse()

	args := flag.Args()
	if len(args) != 1 {
		fmt.Println("Usage: go run main.go [--port|-p <port>] <directory>")
		os.Exit(1)
	}

	directory := args[0]
	fileServer := http.FileServer(http.Dir(directory))

	http.Handle("/", http.StripPrefix("/", fileServer))

	fmt.Printf("Serving files from %s on http://localhost:%d\n", directory, port)
	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), nil))
}