package main import ( "log" "net/http" "os" ) var ( port = ":5050" ) func main() { if len(os.Args) > 2 { port = os.Args[1] } // serve examples dir log.Printf("serving files on port %s", port) http.Handle("/", http.FileServer(http.Dir("../"))) if err := http.ListenAndServe(port, nil); err != nil { log.Fatal(err) } }