004 Node.js File Handling Part 2

In this chapter , we will discuss the following topics related to File Handling

1. Delete File
2. Rename File
3. Truncate File
4. Copy File

Delete File

To delete a file with the File System module, you will use  fs.unlink() method.The fs.unlink() method deletes file.

Example

var fs = require("fs");

fs.unlink('C:\myTest.txt', function (err) {
  if (err) throw err;
  console.log('File deleted!');
}); 

Output :
'File deleted!'


Rename File

To rename file with the File System module, you will use  fs.rename() method.The fs.rename() method rename file.

Example

var fs = require("fs");

fs.rename('myFile.txt', 'myFile2.txt', function (err) {
  if (err) throw err;
  console.log('File Renamed!');
})
 

Output :
'File Renamed!'



Truncate File

To rename file with the File System module, you will use fs.ftruncate() method.The fs.ftruncate() method rename file.

Example

var fs = require('fs')
fs.truncate('input.txt', 0, function()
{
        console.log('File Truncated')
})
 

Output :
'File Truncated!'

Copy File

To Copy file with the File System module, you will use fs.copyFile() method.The fs.copyFile() method Copy file.

Example

var fs = require('fs'); 
     
fs.copyFile('input.txt', 'DestinationFile.txt', (err) => { 
     if (err) throw err; 
      console.log('input.txt was copied to DestinationFile.txt'); 
}); 

Output :
'input.txt was copied to DestinationFile.tx'



https://nodejs.org/api/fs.html#fs_fs_readfile_file_options_callback