Copy a Directory Structure, Transfer Nothing!

There’s a moment every Linux user hits sooner or later.

The Fastest Way to Back Up a File in Bash (You’re Probably Not Using It)

When working in the terminal, backing up a file before editing it is a habit that saves time, nerves, and sometimes entire systems. There’s…

Mistakenly entered a command in terminal in Greek? Auto switch keyboard

If you often type commands in Greek and English, you might have noticed a common annoyance: typing Greek letters by mistake in the…

How to Send and Receive Data with RabbitMQ Named Queues in Python

RabbitMQ is a lightweight message broker that connects independent services through reliable message passing. It’s widely used in…

How to use grep to search text in docx files

Assume the following problem, you have myriad of word files and you want to search inside files for a specific keyword and opening each…

Stop Intruders in Their Tracks: Get an Email Every Time Someone Logs In via SSH

Ever wondered who’s logging into your Linux box? Whether it’s a critical production server or a personal VPS, it’s smart to get notified…

Stop Guessing! The Web API That Verifies and Confirms If an Email Address Exists and Is Deliverable

One common challenge when using emails to communicate with clients is not just confirming that an email address is valid, but ensuring that…

Stalin Sort: The Sorting Algorithm That Purges Dissent

In the glorious world of computer science, we have many elegant ways to sort data — quicksort, mergesort, heapsort. They compare, they…

How to Maintain an AWS RDS Connection Even After the Token Has Expired

When working with AWS RDS and connecting via IAM authentication, you’ll often run into a frustrating limitation: the generated…