TOPIC OVERVIEW

nodejs/File Operations

Read, write, update, and manage files without accidentally blocking your Node.js server.

15 QuestionsIntermediateHigh Priority ~10 min read

Node.js provides the fs module for working with files and directories. You can read files, write new files, rename them, delete them, inspect metadata, and perform many other filesystem operations directly from your application.

Because file operations can take time, Node.js provides asynchronous APIs that allow your application to continue handling other work while the operating system performs the operation. Knowing when to use asynchronous, synchronous, or streaming APIs is important for building responsive servers.

What you'll walk away knowing

How Node.js reads and writes files

How asynchronous and synchronous file APIs differ

How to work with directories and file metadata

When streams are better for large files

1How can you check if a given path is a file or a directory in Node.js?Beginner 2How can you watch for file changes in a directory using Node.js?Intermediate 3What is the purpose of the `fs.exists()` method in Node.js?Intermediate 4What is the difference between `fs.unlink()` and `fs.unlinkSync()` in Node.js?Beginner 5What is the purpose of the `fs.rmdir()` method in Node.js, and how can you delete a directory with it?Intermediate 6What is the purpose of the `fs.mkdir()` method in Node.js, and how can you create directories with it?Intermediate 7How can you delete a file in Node.js?Beginner 8How do you read a file synchronously in Node.js?Intermediate 9How do you read a file asynchronously in Node.js?Intermediate 10Explain what the `fs.readdir()` method is used for in Node.js.Beginner 11How can you append data to an existing file in Node.js?Intermediate 12How can you recursively list all files and directories in a given directory using Node.js?Intermediate 13How can you rename a file or directory in Node.js?Intermediate 14Explain the difference between `fs.readFile()` and `fs.createReadStream()` for reading files in Node.js.Intermediate 15What is the purpose of the `fs.createReadStream()` and `fs.createWriteStream()` methods in Node.js?Intermediate 16Explain how to write to a file in Node.js?Beginner

All Topics

1

2

File Operations

3

4

Performance Optimisation

Sharethis topic

Share via WhatsApp, X, Facebook, LinkedIn or copy link. Open Graph preview enabled.