Simple way to generate UUID in go

uuid

package main

import (
        "os"
        "fmt"
        "log"
)

var Random *os.File

func init() {
        f, err := os.Open("/dev/urandom")
        if err != nil {
                log.Fatal(err)
        }
        Random = f
}

func uuid() string {
        b := make([]byte, 16)
        Random.Read(b)
        return fmt.Sprintf("%x-%x-%x-%x-%x",
                b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
}