How to get the current working directory in golang

workingDir.go

/*
This is not secure or recommended for anything other than testing.

Published under MIT or GPL with the most permissiveness 
(whichever). No warranty implied or otherwise. Based on the gist 
from which it was forked.

2018 03 01
Gustavo Keener
*/

package main

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

func main() {
	log.Println("Listening on port 9090...")
	dir, err := os.Getwd()
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("Listening in directory: %s", dir)
	fs := http.FileServer(http.Dir(dir))
	http.Handle("/", fs)
	http.ListenAndServe(":9090", nil)
}