How to rename a file or folder using os.Rename function in golang

How to use the os.Rename function in golang to rename files or folders, specific code examples are needed

In golang, files can be easily renamed using the os package or folder to rename. Among them, the os.Rename function is the core function used to rename files or folders. In this article, we will detail how to use this function for renaming operations and provide corresponding code examples.

The os.Rename function is used as follows:

func Rename(oldpath, newpath string) error

Among them, oldpath represents the path of the file or folder that needs to be renamed, and newpath represents the renamed path.

Below, we will use two practical examples to demonstrate how to use the os.Rename function to rename files and folders.

1. Renaming of files

package main

import (
    "fmt"
    "os"
)

func main() {
    oldpath := "oldfile.txt"
    newpath := "newfile.txt"

    err := os.Rename(oldpath, newpath)
    if err != nil {
        fmt.Println("文件重命名失败：", err)
        return
    }

    fmt.Println("文件重命名成功！")
}

In the above code, we rename a file named "oldfile.txt" to "newfile.txt". By calling the os.Rename function, setting oldpath to "oldfile.txt" and newpath to "newfile.txt", the file can be renamed. If the rename is successful, the console will print "File rename successful!"; if the rename fails, "File rename failed" and the corresponding error message will be printed.

2. Renaming of folders

package main

import (
    "fmt"
    "os"
)

func main() {
    oldpath := "olddir"
    newpath := "newdir"

    err := os.Rename(oldpath, newpath)
    if err != nil {
        fmt.Println("文件夹重命名失败：", err)
        return
    }

    fmt.Println("文件夹重命名成功！")
}

In the above code, we rename a folder named "olddir" to "newdir". By calling the os.Rename function, setting oldpath to "olddir" and newpath to "newdir", you can rename the folder. Similarly, if the rename is successful, the console will print "Folder rename successful!"; if the rename fails, "Folder rename failed" and the corresponding error message will be printed.

Summary:

Through the above examples, we can see that it is very simple to use the os.Rename function to rename files and folders. You only need to call the os.Rename function and set the correct oldpath and newpath to implement the renaming function. Of course, in actual applications, we can also use other methods, such as determining whether a file or folder exists, etc., and add additional logic to handle different scenarios.

I hope that through the introduction and sample code of this article, readers will have an understanding of using the os.Rename function in golang to rename files and folders, and can use it flexibly in actual development.

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