如何在Golang的文本文件中捕获fmt.Print输出

Question

There are certain fmt.Print statements that I want to save into a .txt file.

I don't want to store all print statments. Can I do this ?

Answer 1

package main

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

func main() {
    file, err := os.Create("myfile")
    if err != nil {
        log.Fatal(err)
    }

    mw := io.MultiWriter(os.Stdout, file)
    fmt.Fprintln(mw, "This line will be written to stdout and also to a file")
}