File System Operations in Node.js – Coding in Telugu

1. Reading and Writing Files:

• fs.readFile() Method: Asynchronously reads the entire contents of a file.
• fs.writeFile() Method: Asynchronously writes data to a file, creating the file if it doesn’t exist.

2. Working with Directories:

• fs.mkdir() Method: Asynchronously creates a directory.
• fs.readdir() Method: Asynchronously reads the contents of a directory.

3. File Streaming in Node.js:

• Utilize fs.createReadStream() and fs.createWriteStream() for efficient handling of large files.
• Stream data in chunks, reducing memory usage.

// Example: Reading and Writing Files
const fs = require('fs');

// Reading a file
fs.readFile('example.txt', 'utf8', (err, data) => {
    if (err) {
        console.error(err);
        return;
    }
    console.log('File Content:', data);
});

// Writing to a file
const contentToWrite = 'Hello, File System!';
fs.writeFile('output.txt', contentToWrite, (err) => {
    if (err) {
        console.error(err);
        return;
    }
    console.log('File written successfully!');
});

Q: How do you read the contents of a file in Node.js?
A: The fs.readFile() method is used to asynchronously read the entire contents of a file.

Q: Explain the purpose of the fs.writeFile() method.
A: The fs.writeFile() method is used to asynchronously write data to a file, creating the file if it doesn’t exist.

Q: How can you create a directory in Node.js?
A: The fs.mkdir() method is used to asynchronously create a directory.

Node.js file system operations tutorial
Reading files asynchronously in Node.js
Writing files with fs.writeFile() in Node.js
Working with directories in Node.js
Node.js fs.mkdir() method explained

Efficient file streaming in Node.js
Handling large files in Node.js
Node.js fs.readdir() best practices
Asynchronous file operations in Node.js
Stream data with fs.createReadStream() in Node.js

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