How to create a new folder using os.Mkdir function in golang

How to create a new folder using the os.Mkdir function in golang

Overview:
In golang, we can use os.MkdirFunction to create a new folder. This function accepts a path as a parameter and will create a new folder under the specified path. This article details how to use this function and provides corresponding code examples.

Step 1: Import package
Before using the os.Mkdir function, we need to import the os package first. Add the following code at the head of the code:

import "os"

Step 2: Call the os.Mkdir function
Next, we can call os.Mkdir## in the code #Function to create a new folder. This function requires two parameters: the path and permissions of the folder.

Path parameter: Specify the path of the new folder. Paths can be relative or absolute. When specifying paths, you can use

/ to separate folders. For example: ./newfolder represents the newfolder folder in the current directory; /home/user/newfolder represents the newfolder under the absolute path folder.

Permission parameters: Specify the permissions of the new folder. Permissions can be expressed using the operating system's file permissions, such as

0777. In most cases, we can use the default permissions, which are os.ModePerm.

The sample code is as follows:

err := os.Mkdir("./newfolder", os.ModePerm)
if err != nil {
    fmt.Println(err)
    return
}
fmt.Println("文件夹创建成功")

The above code will create a folder named

newfolder in the current directory. If the creation is successful, "Folder created successfully" will be printed.

Step 3: Error handling

When using the
os.Mkdir function, we need to pay attention to error handling. If creating the folder fails, the function will return a non-null error value and we need to handle the error in our code. Usually, we can use the if statement to determine whether the error is empty, and handle it accordingly when an error occurs.

The sample code is as follows:

err := os.Mkdir("./newfolder", os.ModePerm)
if err != nil {
    fmt.Println(err)
    return
}
fmt.Println("文件夹创建成功")

In the above example, if the folder creation fails, the error message will be printed out and the program execution will be terminated.

Summary:

Using the
os.Mkdir function can easily create a new folder in golang. We only need to provide the path and permission parameters of the folder, and the function will create a new folder under the specified path. When using this function, you need to pay attention to error handling to ensure that the process of creating the folder goes smoothly.

Code example:

package main

import (
    "fmt"
    "os"
)

func main() {
    err := os.Mkdir("./newfolder", os.ModePerm)
    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Println("文件夹创建成功")
}

The above are the detailed steps and sample code on how to use the

os.Mkdir function in golang to create a new folder. Hope this article can be helpful to you!

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