How to connect to PostgreSQL using Node.js
Node.js applications that need to read or write data from a PostgreSQL database require a driver to handle the connection. The node-postgres package (pg) provides that driver, along with support for queries, connection pooling and async/await syntax. This…
How to install npm packages
npm (Node Package Manager) is the default package manager for Node.js, giving you access to hundreds of thousands of open-source libraries and tools. Whether you are running a bare Linux VPS or a cPanel-managed server, you need Node.js and npm installed…
How to create and manage symbolic links in Linux
Symbolic links let you reference files and directories from multiple locations without duplicating data. They act as pointers that redirect to the original file or folder, which makes them useful for organising complex directory structures and maintaining…
How to install Node.js on Linux
Node.js executes JavaScript code outside the browser, turning it into a language for building servers, command-line utilities and backend services. Installing Node.js on your Linux server gives you the node runtime for executing code and npm for managing…
How to check open ports on Linux
Open ports on your Linux server indicate which services accept network connections. Monitoring these ports prevents unauthorised access and helps you troubleshoot connectivity problems. You will check open ports using four command-line tools: ss, netstat,…
