Node.js | fs.rename() Method

The fs.rename() method is used to asynchronously rename a file at the given old path to a given new path. It will overwrite the destination file if it already exists.

Syntax:

fs.rename( oldPath, newPath, callback )

Parameters: This method accept three parameters as mentioned above and described below:

  • oldPath: It holds the path of the file that has to be renamed. It can be a string, buffer or URL.
  • newPath: It holds the new path that the file has to be renamed. It can be a string, buffer or URL.
  • callback: It is the function that would be called when the method is executed. It has an optional argument for showing any error that occurs during the process.

Below examples illustrate the fs.rename() method in Node.js:

Example 1: This example uses fs.rename() method to rename a file.



filter_none

edit
close

play_arrow

link
brightness_4
code

// Node.js program to demonstrate the    
// fs.rename() method 
     
// Import filesystem module
const fs = require('fs');
   
// List all the filenames before renaming
getCurrentFilenames();
   
// Rename the file
fs.rename('hello.txt', 'world.txt', () => {
  console.log("\nFile Renamed!\n");
   
  // List all the filenames after renaming
  getCurrentFilenames();
});
   
// Function to get current filenames
// in directory
function getCurrentFilenames() {
  console.log("Current filenames:");
  fs.readdirSync(__dirname).forEach(file => {
    console.log(file);
  });
}

chevron_right


Output:

Current filenames:
hello.txt
index.js

File Renamed!

Current filenames:
index.js
world.txt

Example 2: This example uses fs.rename() method to demonstrate an error during file renaming.

filter_none

edit
close

play_arrow

link
brightness_4
code

// Node.js program to demonstrate the    
// fs.rename() method 
     
// Import filesystem module
const fs = require('fs');
   
// List all the filenames before renaming
getCurrentFilenames();
   
// Rename the file
fs.rename('hello.txt', 'geeks.txt', (error) => {
  if (error) {
      
    // Show the error 
    console.log(error);
  }
  else {
  
    // List all the filenames after renaming
    console.log("\nFile Renamed\n");
   
    // List all the filenames after renaming
    getCurrentFilenames();
  }
});
   
// Function to get current filenames
// in directory
function getCurrentFilenames() {
  console.log("Current filenames:");
  fs.readdirSync(__dirname).forEach(file => {
    console.log(file);
  });
}

chevron_right


Output:

Current filenames:
index.js
package.json
world.txt
[Error: ENOENT: no such file or directory, rename 
'G:\tutorials\nodejs-fs-rename\hello.txt' ->
'G:\tutorials\nodejs-fs-rename\geeks.txt'] {
  errno: -4058,
  code: 'ENOENT',
  syscall: 'rename',
  path: 'G:\\tutorials\\nodejs-fs-rename\\hello.txt',
  dest: 'G:\\tutorials\\nodejs-fs-rename\\geeks.txt'
}

Reference: https://nodejs.org/api/fs.html#fs_fs_rename_oldpath_newpath_callback




My Personal Notes arrow_drop_up

Im listening

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.