golang exeCmd

func exeCmd()  {
    cmd := exec.Command("ls","-l","/usr")
    fmt.Println(cmd)

    fmt.Println("Cmd", cmd.Args)
    var out bytes.Buffer
    cmd.Stdout = &out
    cmd.Stderr = os.Stderr
    err := cmd.Start()
    if err != nil {
        panic(err)
    }
    err = cmd.Wait()
    fmt.Println(out.String())
}