Questions

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1How do you read a file synchronously in Node.js?

2How do you read a file asynchronously in Node.js?

3Explain how to write to a file in Node.js?

4What is the purpose of the `fs.exists()` method in Node.js?

5How can you delete a file in Node.js?

6What is the purpose of the `fs.createReadStream()` and `fs.createWriteStream()` methods in Node.js?

7How can you check if a given path is a file or a directory in Node.js?

8Explain the difference between `fs.readFile()` and `fs.createReadStream()` for reading files in Node.js.

9How can you append data to an existing file in Node.js?

10How can you recursively list all files and directories in a given directory using Node.js?

11What is the purpose of the `fs.mkdir()` method in Node.js, and how can you create directories with it?

12How can you rename a file or directory in Node.js?

13Explain what the `fs.readdir()` method is used for in Node.js.

14What is the purpose of the `fs.rmdir()` method in Node.js, and how can you delete a directory with it?

15What is the difference between `fs.unlink()` and `fs.unlinkSync()` in Node.js?

16How can you watch for file changes in a directory using Node.js?

nodejs

File Operations

Performance Optimisation

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How can you append data to an existing file in Node.js?

You can append data to an existing file in Node.js using the fs.appendFile() method. Here's an example:

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