golang create folder if not exist

To create a folder in Go (also known as golang) if it doesn't already exist, you can follow these steps:

1. Import the os package: In order to interact with the operating system, you need to import the os package. This package provides functions and methods to perform various operating system-related operations.

2. Use the os.Stat function to check if the folder already exists: The os.Stat function allows you to get information about a file or directory. By passing the path to the folder as an argument to os.Stat, you can check if the folder already exists. If the folder does not exist, the os.Stat function will return an error.

3. Check the error returned by os.Stat: After calling os.Stat, you need to check the error returned. If the error is not nil, it means that the folder does not exist.

4. Use the os.Mkdir function to create the folder: If the folder does not exist, you can use the os.Mkdir function to create it. This function takes the path to the folder as the first argument and the file permission as the second argument. The file permission determines the access rights for the created folder.

Here is an example code snippet that demonstrates these steps:

package main

import (
    "fmt"
    "os"
)

func main() {
    folderPath := "/path/to/folder"

    _, err := os.Stat(folderPath)
    if os.IsNotExist(err) {
        err := os.Mkdir(folderPath, 0755)
        if err != nil {
            fmt.Println("Failed to create folder:", err)
            return
        }
        fmt.Println("Folder created successfully!")
    } else if err != nil {
        fmt.Println("Error checking folder existence:", err)
        return
    } else {
        fmt.Println("Folder already exists!")
    }
}

In this example, replace "/path/to/folder" with the actual path where you want to create the folder. The 0755 permission used in os.Mkdir gives read, write, and execute permissions to the owner and read and execute permissions to others.

By following these steps, you will be able to create a folder in Go if it doesn't already exist.