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Golang program to read the content of a specified directory and check directories and files

Here, we are going to learn how to read the content of a specified directory and check directories and files in Golang (Go Language)?
Submitted by Nidhi, on April 11, 2021 [Last updated : March 04, 2023]

How to read the content of a specified directory and check directories and files in Golang?

Problem Solution:

In this program, we will list the content of a specified directory using ioutil.ReadDir() function and print list of files and directories on the console screen.

Program/Source Code:

The source code to read the content of a specified directory and check directories and files is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

Golang code to read the content of a specified directory and check directories and files

// Golang program to read the content of a
// specified directory and check directories and files

package main

import "fmt"
import "io/ioutil"

func main() {
	result, err := ioutil.ReadDir("MyDir")
	if err != nil {
		panic(err)
	}

	fmt.Println("Content of MyDir direcory:")
	for _, val := range result {
		if val.IsDir() == true {
			fmt.Printf("\tDirectory: '%s'\n", val.Name())
		} else {
			fmt.Printf("\tFile: '%s'\n", val.Name())
		}
	}
}

Output:

Content of MyDir directory:
	File: 'ABC.txt'
	File: 'data.bin'
	File: 'file.bin'
	Directory: 'sample'

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, io/ioutil packages then we can use a function related to the fmt and io/ioutil package.

In the main() function, we listed the content of the directory using ioutil.ReadDir() and print the list of files and directories on the console screen.

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