Posts

Random stuff that interests me and I think should be written down, mostly for myself.

Securely removing files and folders

Mehrad Mahmoudian published on
12 min, 2207 words

Abstract

This is a general post to explain why and how to remove/delete files on a Linux system in a secure way. As usual, I will add some explanation on why and then get to how. Although I encourage you to read the explanation part, you of course have the freedom to jump right into the solution section.

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Rollback Flatpak and Snap packages

Mehrad Mahmoudian published on
3 min, 472 words

Abstract

In this short post I briefly explain how to rollback (i.e install previous version) of a software that you have installed using Flatpak on Snap. This is useful especially when the new version does not work as expected.

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Extracting payment info in rasterized invoice

Mehrad Mahmoudian published on
4 min, 728 words

Abstract

In this short article I will explain how I have put together an OCR and a barcode reader and converter using FLOSS (Free and Libre OpenSource Software) so that I can pay the bills I have got from my phone based on an image of an invoice I got on my desktop computer.

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