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Golang program to get the null device

Here, we are going to learn how to get the null device in Golang (Go Language)?
Submitted by Nidhi, on April 19, 2021 [Last updated : March 05, 2023]

Getting the null device in Golang

Problem Solution:

In this program, we will use os.DevNull constant. The Os.DevNull constant returns the null device, it returns "/dev/null" in Linux or it returns "NUL" in windows.

Program/Source Code:

The source code to get the null device is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

Golang code to get the null device

// Golang program to get the null device

package main

import "fmt"
import "os"

func main() {
	var device string

	device = os.DevNull

	if device == "/dev/null" {
		fmt.Printf("Null Device: '%s'\n", device)
	} else {
		fmt.Printf("Device is not null\n")
	}
}

Output:

Null Device: '/dev/null'

Explanation:

In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the "fmt" package to use the Printf() function and we also imported the "os" package to use the DevNull function.

In the main() function, we created a string device. Then we get a null device using os.DevNull constant and then we checked the null device and printed the appropriate message on the console screen.