simple http server serving file sys with Go

httpfs.go

package main

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

var addr, dir, prefix string

func init() {
        flag.StringVar(&addr, "bind", ":8888", "where to bind")
        flag.StringVar(&dir, "dir", ".", "which dir to serve")
        flag.StringVar(&prefix, "prefix", "", "strip some prefix?")
        flag.Parse()
}

func err(e error) {
        if e != nil {
                fmt.Println(e)
                os.Exit(1)
        }
}

func main() {
        handler := http.FileServer(http.Dir(dir))
        if prefix != "" {
                handler = http.StripPrefix(prefix, handler)
        }
        fmt.Printf("Starting at: %v, dir=%v, prefix=%v\n", addr, dir, prefix)
        err(http.ListenAndServe(addr, handler))
}

Usage: sh: go build http.go && ./http -bind :8080 -dir /var/www/static