Finding Empty Directories in Linux with One Command
In Linux systems, empty directories often accumulate over time — leftovers from removed applications, failed builds, or cleanup scripts……
$ grep -rn "#Linux" ./posts
Copy a Directory Structure, Transfer Nothing!
There’s a moment every Linux user hits sooner or later.…
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 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 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……
Automate Outlook Email Creation on macOS with Body Text and Attachments from Terminal
If you often work in the macOS Terminal and want to quickly draft an Outlook email — complete with body text and file attachments — this……
Converting Timestamps Between Timezones on Linux
When working with logs, scheduling, or data pipelines, you often need to convert timestamps from one timezone to another. The date command……
How to Lock Your Mac Screen from the Command Line (And Why You Should)
If you use macOS and spend a lot of time in the terminal, you might be surprised to learn that you can lock your screen with a simple Bash……
Linux: how to delete a file only when is not used by any process
When working on Linux systems — whether servers in production, development machines, or even embedded devices — you’ll eventually run into……