Occasionally, we may need to check out the default port number of specific services/protocols or services listening on certain ports on Linux. A number of command line tools are available to help you search port names and numbers in your [...]
How to Install CHKROOTKIT on Ubuntu 18.04/Centos 7
In this tutorial, I'll explain how to install chkrootkit on our latest Ubuntu 18.04 and CentOS 7 systems. The chkrootkit is a common security scanner which helps the administrators to search the local system for signs that it is infected [...]
Termtosvg - A Tool to Record Terminal Session in Linux
During a presentation or a course/tutorial, you often need to present the results of the commands executed in your terminal. When the audience is present, it is possible to show the output immediately but for those who are not present, [...]
How to Configure Static IP Address on Ubuntu 18.04
Sometimes, you may find the need to configure a static IP address on your system. A perfect example is when you want to make it a server and host services so that it is always reached using a permanent/static IP address. In [...]
How to Remove Old kernel Versions from Boot on Ubuntu 18.04
Canonical provides regular updates for Ubuntu 18.04 system including kernel updates to manage the system’s resources as best as possible. This article will provide you some different methods to remove old kernels from the boot menu of your Ubuntu 18.04. When [...]
How to Install MySQL 8.0 on Ubuntu 18.04
In this brief tutorial, we'll look at how you can install MySQL 8.0 on Ubuntu 18.04. MySQL is a free and opensource cross platform database server that is used on many opensource projects and high availability systems such as LAMP [...]
How to Configure Postfix with Webmail on Ubuntu 18.04
We have shown in the first part of our tutorial how to install and configure Postfix on Ubuntu 18.04 with Dovecot, MySql, Nginx, Postfixadmin with which we have created the virtual domains and users. Now we are able to send [...]
QtPad - Modern Customizable Sticky Note App for Linux
In this article, we'll focus on how to install and use QtPad on Ubuntu 18.04. Qtpad is a unique and highly customizable sticky note application written in Qt5 and Python3 tailored for Unix systems. Some of its notable features include: [...]
umonitor - Update Resolutions of Monitors on Hotplugged in Linux
This guide will cover installation and basic usage of umonitor on Linux. umonitor is a dynamic monitor management written in C and distributed as a single binary package. The name dynamic monitor management means that the positions and resolutions of your screen monitors will [...]
How to Install Packages on Arch Linux
Arch Linux is one of the popular Desktop Operating systems. Its main pros revolve around large community and thousands of packages that can be installed on Arch Linux, both from official repositories and from AUR. In this guide, we will [...]
How to Install and Configure Postfix on Ubuntu 18.04
Postfix is a free email server originally developed as an alternative, simpler and more secure to sendmail. This tutorial will show you how to setup a postfix mail server on your Ubuntu 18.04 server. Postfix allows you to manage virtual [...]
How to Install Latest Python on Ubuntu 18.04
In this article, we are going to show how to install the latest python on Ubuntu 18.04 machine using the terminal. Also, we will create a virtual environment and a simple program and run it. At the moment of writing [...]
How to Manually Install Security Updates on Ubuntu 18.04
One of the most crucial tasks that a systems administrator needs to undertake is ensuring that systems are patched with the latest security updates. Ubuntu is considered as one of the most secure Linux distributions but it can be susceptible [...]
How to Install Let's Encrypt SSL Certificates on Ubuntu 18.04
Certbot is a user-friendly automatic client that fetches and deploys SSL/TLS certificates for your web server. It is an EFF's tool which is used to obtain certs from Let's Encrypt and auto-enable HTTPS on your server. In short, it acts [...]