How to Install Nvidia Driver on Debian 9 Stretch From Command Line

This tutorial will be showing you how to install Nvidia graphics driver on Debian 9 Stretch. Debian by default uses the open source nouveau driver, which is included in the Linux kernel, for Nvidia cards. However, this driver lacks 3D acceleration support. If you are a gamer or need to work with...

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How to Install Nvidia Driver on Debian 9 Stretch From Command Line

2 Ways to Install PhpStorm 2018.3 on Ubuntu 18.04, Ubuntu 18.10

This tutorial is going to show you 2 ways to install PhpStorm on Ubuntu 18.04 and Ubuntu 18.10. PhpStorm is a PHP IDE (Integrated Development Environment) for working with Symfony, Drupal, WordPress, Zend Framework, Laravel, Magento, Joomla!, CakePHP, Yii. It’s a commercial (with 30-day...

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2 Ways to Install PhpStorm 2018.3 on Ubuntu 18.04, Ubuntu 18.10

How To Install Oracle Java 8 and OpenJDK 11 on Ubuntu 18.04, 18.10

This tutorial is going to show you how to install Oracle Java 8 and OpenJDK 11 on Ubuntu 18.04/Ubuntu 18.10. Java 11 has been released on September 25, 2018 and it’s the first long term support (LTS) release since Oracle changed release schedule.
Java Release Model
Previously, Oracle...

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How To Install Oracle Java 8 and OpenJDK 11 on Ubuntu 18.04, 18.10

Fix "could not get lock /var/lib/dpkg/lock" Error Once and For All (Ubuntu)

The “could not get lock /var/lib/dpkg/lock” error is pretty common in Debian/Ubuntu running in virtual machine. Existing workarounds on the Internet (i.e. kill the apt-get process, or remove the lock file) are not ideal, because you will face the same error again in the future.
Fix...

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Fix "could not get lock /var/lib/dpkg/lock" Error Once and For All (Ubuntu)

How to Download and Install RHEL8 Beta For Free (Red Hat Enterprise Linux)

RHEL (Red Hat Enterprise Linux) 8 beta was released on November 14, 2018, 4 years after the release of RHEL 7. This tutorial will be showing you how to download and install RHEL8 beta for free.
Improvements and new features in RHEL 8

Application Stream (AppStream) repositories allows delivering...

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How to Download and Install RHEL8 Beta For Free (Red Hat Enterprise Linux)

How to Easily Enable TLS 1.3 in Nginx on Ubuntu 18.10, 18.04, 16.04, 14.04

In a previous article, I explained the steps of compiling Nginx source code with OpenSSL 1.1.1 in order to enable TLS 1.3 protocol, which was officially released in Augest 2018. In this tutorial, I will show you a simpler way to enable TLS 1.3 on Ubuntu 18.10, 18.04, 16.04 and 14.04.
TLS 1.3...

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How to Easily Enable TLS 1.3 in Nginx on Ubuntu 18.10, 18.04, 16.04, 14.04

How to Set up Certificate Authentication in OpenConnect VPN Server (ocserv)

This tutorial will be showing you how to set up certificate authentication in OpenConnect VPN server (ocserv) on Ubuntu. OpenConnect (ocserv) is an open-source implementation of the Cisco AnyConnect VPN protocol.
In a previous article, I explained the steps to set up OpenConnect VPN server with...

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How to Set up Certificate Authentication in OpenConnect VPN Server (ocserv)

How to Host Multiple Domains in Modoboa Mail Server

This tutorial will be showing you how to set up multiple email domains with Modoboa, which is an easy-to-use and open-source mail hosting solution. To follow this tutorial, it’s assumed that you have already set up a Modoboa mail server with one domain name.
What You Need to Do
If you want to h...

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How to Host Multiple Domains in Modoboa Mail Server

How to Set up iRedMail Multiple Domains with Nginx

This tutorial will be showing you how to set up multiple email domains with iRedMail, which is an easy way to set up your own email server.
Prerequisites
To follow this tutorial, it’s assumed that

You have already set up a iRedMail server with one domain.
You are using the latest version...

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How to Set up iRedMail Multiple Domains with Nginx

How to Easily Set Up a Full-Featured Mail Server on Ubuntu 18.04 with iRedMail

Setting up your own email server on Linux from scratch is a pain in the butt, if you are not an advanced user. This tutorial will be showing you how to use iRedMail to quickly set up a full-featured mail server on Ubuntu 18.04, saving you lots of time and headaches.
What is iRedMail?
iRedMail is...

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How to Easily Set Up a Full-Featured Mail Server on Ubuntu 18.04 with iRedMail

How to Fix No Domain Under Control Error in iRedMail

While I’m setting up a mail server on Ubuntu 18.04 with iRedMail 0.9.8, I encountered the “No domain under control” error in iRedAdmin panel. This article will explain how to fix this error.

Note: The method used in article is for new iRedMail server. If your iRedMail server...

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How to Fix No Domain Under Control Error in iRedMail