콘솔과 로그 파일에 명령 출력을 동시에 쓰려면 어떻게 해야 합니까?

<code class="go">package main

import (
    "io"
    "log"
    "os"
    "os/exec"
)

func main() {
    // Open the log file for writing
    f, err := os.OpenFile("log.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
    if err != nil {
        log.Fatalf("Error opening file: %v", err)
    }
    defer f.Close()

    // Create a MultiWriter that combines the log file and standard output
    mwriter := io.MultiWriter(f, os.Stdout)

    // Construct the command
    cmd := exec.Command("ls")

    // Redirect Stdout and Stderr to the MultiWriter
    cmd.Stdout = mwriter
    cmd.Stderr = mwriter

    // Run the command
    err = cmd.Run()
    if err != nil {
        panic(err)
    }
}</code>