Simple Static File server, to get the current working directory and display it in a browser. Includes CLI part for customization.

 package main  
 import (  
      "flag"  
      "net/http"  
      "os"  
 )  
 func main() {  
      var dir string  
      port := flag.String("port", "3000", "HTTP Port to serve")  
      path := flag.String("path", "", "path to serve")  
      flag.Parse()  
      if *path == "" {  
           dir, _ = os.Getwd()  
      } else {  
           dir = *path  
      }  
      http.ListenAndServe(":"+*port, http.FileServer(http.Dir(dir)))  
 }