Category Archives: Linux

How to change keyboard layout on Ubuntu Linux server

Posted on April 4, 2023 by Ahmed Tawfik

So, I have some Linux servers with default keyboard set to Italian, which is totally different from the US one when it comes to special characters. There are multiple ways to do it, but the fastest and easiest one I … Continue reading →

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How to change the web server identification string of your OpenVPN AS Server on Ubuntu 22.04

Posted on July 31, 2022 by Ahmed Tawfik

The default web server identification string of your OpenVPN Server can be one way to identify it in automated vulnerability scanners such as nmap. To change it to an arbitrary value to reduce the chance of being identified by vulnerability … Continue reading →

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Search for files with certain size and extension

Posted on December 29, 2021 by Ahmed Tawfik

I was looking for a large PDF file that was above 100 MB. The file was inside thousands of other files and folders, so I used this command to find it: find . -type f -size +100M | grep -i … Continue reading →

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How to get rid of GLib-GIO-ERROR **: Settings schema ‘***’ does not contain a key on Gnome 40+

Posted on October 11, 2021 by Ahmed Tawfik

In case you mess up the schema for any reason and you are no longer able to open the Gnome settings, e.g. gnome-control-center, just do the following and then logout and back in (or simply reboot): rm .config/dconf/user That’s it! … Continue reading →

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Cracking WiFi keys with Aircrack-ng and hashcat using GPU

Posted on July 29, 2021 by Ahmed Tawfik

Disclaimer This post is for educational purposes only and should NOT be used otherwise. The primary aim is to understand how a weak WiFi password can be compromised in a few minutes, if not less. Introduction In this post I … Continue reading →

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