Disable terminal in Golang

In Golang, disabling the terminal is a common requirement to prevent the program from outputting information in the terminal. This is very useful in some specific scenarios, such as running a program in the background, running as a service, etc. Disabling the Terminal can make programs quieter and more private, while also making them run more efficiently. This article will introduce how to disable the terminal in Golang, and provide corresponding code examples and explanations. Whether you are a beginner or an experienced developer, you can quickly learn how to disable the terminal function in Golang through this article.

Question content

I am using an external library that requires a password on the terminal or uses a buffer that must return the correct password. It itself is using another library to check if the terminal is available. The library says the terminal is available, which is correct.

I want to disable the terminal so that it uses the password from the buffer I provide. How can I do this?

Workaround

As far as I know, the library checks whether a given file descriptor comes from a terminal device via a system call. You can turn off stdin and that's it :) If the library hardcodes os.Stdout, another solution is needed, because if you turn off os.Stdout You will no longer be able to use terminal output.

The code below prints errors.

package main

import (
    "fmt"
    "github.com/mattn/go-isatty"
    "os"
)

func main() {
    err := os.Stdin.Close()
    if err != nil {
        fmt.Println("Could not close stdin")
        panic(err)
    }

    fmt.Println(isatty.IsTerminal(os.Stdin.Fd()))
}

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