VirtualBox - Install guest tools on a Windows virtual machine

VirtualBox - download and install the extension pack.

Update VirtualBox on Ubuntu

How to configure sudo restriction and authorization

Debian Linux: How to install sudo and configure a user to use "sudo".

KDE 6 is here, yay

A look at the KDE 6 system settings

KDE 6 versus KDE 5.27 - Let's take a look.

Nagios 4 to 4 - How to configure email alerts

Postfix - how to use gmail as smarthost (relay host)

How to Boot from USB drive

Nagios 3 to 4 - How to monitor a Windows host and its services

How to quit the vi editor in linux

Nagios 2 to 4 - How to monitor a Ubuntu Linux host and its services

vi command - How to fix its strange behavior in Debian or Ubuntu

Nagios 1 to 4 - How to install Nagios in Ubuntu server 22 04 (+ basic configuration)

How to set up an ip static address on ubuntu server 22.04

How to change your Microsoft Windows language.

How to change timezone on Ubuntu Linux 22.04

How to configure a static ip address on Debian 11 in command line and with the gnome interface

How to download and install putty