Abdelrahman's Blog

How-to: Images

Sat, 10 Jan 2026 00:00:00 +0000

.zsh_history isn't forever

I don't have Python installed

Sun, 16 Nov 2025 00:00:00 +0000

Why would I?

Finessing Unix pipes

Mon, 22 Sep 2025 00:00:00 +0000

up: a live playground for terminal commands

Scripting with Kotlin

Mon, 15 Sep 2025 00:00:00 +0000

Via kotlinc -script

How-to: PDFs

Sun, 14 Sep 2025 00:00:00 +0000

.zsh_history isn't forever

Shell we Nix?

Sun, 09 Mar 2025 00:00:00 +0000

Ever wanted a way to quickly & temporarily install an amusing command-line tool that you read about on the interwebz?

I certainly needed something like that since forever. Every now and then I gotta compress a JPEG using imagemagick, format a markdown file using prettier, or demonstrate to my colleagues that [,,,].length is a valid JavaScript expression, while not having Node.js installed on my machine.

Second best thing I had was Homebrew. I’d brew install the tool, take it for a spin, and hopefully remember to brew uninstall it afterwards - or else it’ll not only bloat my system, but also slow down brew upgrades even more for the forseable future until I factory-reset my machine next Spring cleaning.

Delightful Programming with Kotlin: Part #1

Sun, 14 Apr 2024 00:00:00 +0000

A compiler tells you whether the code you wrote is syntactically valid. A good compiler, however, doesn’t do just that; it also tells you at build time whether your code might run into a logical bug later on at runtime.

One such logical bug we often make as developers is not handling the possibility that map lookups yield nothing. Being a good compiler, kotlinc knows that the entry you’re looking up in a map might not exist, and therefore errors out if it detects that you weren’t prepared for that possibility.

How to subtract dates in Node.js

Thu, 20 Jul 2023 00:00:00 +0000

It's probably not what you think.

Record your terminal using your terminal

Mon, 10 Jul 2023 00:00:00 +0000

Record your terminal as a GIF with asciinema and agg

The Sierpiński triangle

Sun, 01 Jan 2023 00:00:00 +0000

Drawing the Sierpiński triangle fractal on the HTML Canvas

Generate large files in Unix ad hoc

Wed, 28 Dec 2022 00:00:00 +0000

Leveraging one of Unix's most versatile commands to our advantage

Your network packets were in my living room

Sun, 30 Oct 2022 00:00:00 +0000

Serving my blog from home!

Logic programming in JavaScript

Mon, 30 May 2022 00:00:00 +0000

Logic programming in JavaScript using LogicJS

Publications

Mon, 01 Jan 0001 00:00:00 +0000