golang怎么编写一个window定时关机

package mainimport (

    "flag"

    "fmt"

    "github.com/robfig/cron"

    "time")import (

    . "github.com/CodyGuo/win")var (

    arg string)func init() {

    flag.StringVar(&arg, "uFlags", "shutdown", "shutdown logoff reboot")}func main() {

    flag.Parse()

    c := cron.New(cron.WithSeconds())

    c.AddFunc("0 40 18 * * ?", shutdown)

    c.Start()

    select {}

    switch arg {

    case "logoff":

        logoff()

    case "reboot":

        reboot()

    case "shutdown":

        shutdown()

    default:

        fmt.Println("您输入的参数有误.")

    }}func Test(){

    fmt.Println(time.Now())}func logoff() {

    ExitWindowsEx(EWX_LOGOFF, 0)}func reboot() {

    getPrivileges()

    ExitWindowsEx(EWX_REBOOT, 0)}func shutdown() {

    getPrivileges()

    ExitWindowsEx(EWX_SHUTDOWN, 0)}func getPrivileges() {

    var hToken HANDLE    var tkp TOKEN_PRIVILEGES    OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &hToken)

    LookupPrivilegeValueA(nil, StringToBytePtr(SE_SHUTDOWN_NAME), &tkp.Privileges[0].Luid)

    tkp.PrivilegeCount = 1

    tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED    AdjustTokenPrivileges(hToken, false, &tkp, 0, nil, nil)}

c.AddFunc("0 40 18 * * ?", shutdown)