Statically serve the content of a directory. By default it picks up the current working directory but you can also pass the path using the --path command-line flag.

serve.go

// Statically serve the content of a directory. By default it picks up the
// current working directory but you can also pass the path using the --path
// command-line flag.

package main

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

var (
        port = flag.Int("port", 3000, "Port on which to serve")
        path = flag.String("path", "", "Path to the directory")
)

func main() {
        flag.Parse()
        if *path == "" {
                pwd, err := os.Getwd()
                if err != nil {
                        log.Fatal(err)
                }
                *path = pwd
        }
        // Make sure we 'touch' the path so that the browser does not do
        // any caching which would be insanely confusing.
        if err := os.Chtimes(*path, time.Now(), time.Now()); err != nil {
                log.Fatal(err)
        }
        http.Handle("/", http.FileServer(http.Dir(*path)))
        log.Printf("Serving content of '%s' on port %d", *path, *port)
        log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", *port), nil))
}