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Postfix is a free and widely used open-source mail transfer agent. It supports MySQL, PostgreSQL, and SQLite as the database server to store and manage the virtual domains. PostfixAdmin is a free web-based interface to manage a postfix mail server. With this tool, we can easily add/remove/edit domain names, email accounts, email quotas, email forwarding, etc.

In this tutorial, we will show you how to set up a mail server with PostfixAdmin on Debian 11 (Bullseye) OS.

Back in the early days of personal computers, I wrote the IBM training course for the original IBM PC. To complete the course in time for the IBM, ComputerLand, and Sears training, IBM gave me a PC to take home so I could work over evenings and weekends—arguably the first instance of anyone having an IBM PC in their home.

Valve released today a new Steam Client update for all supported platforms, including GNU/Linux, to address a few annoyances and improve VA-API hardware decoding on Linux.

PDF Mix Tool is a small utility that allows you to perform common editing operations on PDF files. It’s a Qt-based tool that’s written in C++.

Finding files and directories in Linux is a very difficult task compared to Windows operating system. Especially if you are working on the server operating system without a Desktop interface. There are several ways to search files and directories in Linux. The simple and easiest way is to use the Linux terminal to search or locate files.

Learn how to list local users on Ubuntu and how to list logged on users.

As someone who has spent their entire career in open source software (OSS), the Log4Shell scramble (an industry-wide four-alarm-fire to address a serious vulnerability in the Apache Log4j package) is a humbling reminder of just how far we still have to go. OSS is now central to the functioning of modern society, as critical as highway bridges, bank payment platforms, and cell phone networks, and it’s time OSS foundations started to act like it.

Calibre creator and maintainer Kovid Goyal released today a new version of his popular open-source, cross-platform, and free ebook management software, Calibre 5.34, which adds support for a new device and various improvements.

Blueberry is a new Python scripts that sets your currently playing Spotify song title and album cover as your GNOME desktop wallpaper. To use it, you need Spotify Premium.

It doesn't rain, but it pours. Previously, one assumption about the 10 out of 10 Log4j security vulnerability was that it was limited to exposed vulnerable servers. We were wrong. The security company Blumira claims to have found a new, exciting Log4j attack vector.

Odoo (formerly known as OpenERP) is a suite of open-source business applications. The most used modules for Odoo include Point of Sale (POS), Inventory, CRM, Website, Live Chat, e-Commerce, Billing, Accounting, Warehouse, and others. The range of the modules that can be installed in one application makes Odoo very popular nowadays.

In this tutorial, we will show you how to install Odoo 14 on Debian 11 with Apache as a reverse proxy.

Debugging Python code, for many of us, comes down to adding print statements and trying to reason what’s going on based on the output. It’s not ideal, but for some reason, people just don’t want to touch the Python debugger.

Over the past couple of years, interest in Linux on the desktop has slowly increased. While running any Linux distribution on a personal computer is still uncommon, an increasing amount of people have heard of it. Thus, it would be good to talk about the steps that it takes, in case you’re interested in trying […]

For the upcoming Ubuntu 22.04 release, the Yaru developers are removing the aubergine (eggplant) color from the default Ubuntu theme, replacing it with orange, since libadwaita will only allow Ubuntu to use one accent color.

A wide range of open source topics essential for OSPO related activities occurred in 2021, featured by OS experts coming from matured OSPOs like Bloomberg or RIT and communities behind open source standards like OpenChain or CHAOSS. The TODO Group has been paving the OSPO path over a decade of change and is now composed of a worldwide community of open source professionals working in collaboration to drive Open Source Initiatives to the next level.

State machines are abstract computational machines that can be in only one of their finite number of states at any given time. They can change from one state to another in response to inputs. State machines can be defined by the list of their states, their initial state and the inputs that trigger the state transitions. State machines are usually visualized by state charts:

This article shows you how to use apt command in Ubuntu, Debain, Linux Mint, or any other Debian or Ubuntu based distributions, with examples so that you can manage packages with easy.

Through LF Research, the Linux Foundation is uniquely positioned to create the definitive repository of insights into open source. By engaging with our community members and leveraging the full resources of our data sources, including a new and improved LFX, we’re not only shining a light on the scope of the projects that comprise much of the open source paradigm but contextualizing their impact. In the process, we’re creating both a knowledge hub and an ecosystem-wide knowledge network. Because, after all, research is a team sport.

You can really tell System76 is a hardware vendor. Stateside Linux laptop vendor System76 has released a new version of its own distro, which promptly messed up this hack's test laptop. Although its name alludes to the American revolution in 1776, System76 is rather younger. It was established in 2005, just a year after Ubuntu released its first version. The company sells PCs pre-installed with Linux, and since 2017 has offered its own distro, Pop!_OS [sick! sorry, sic], a heavily modified version of Ubuntu – and it's just released version 21.10.

Gradle is a build automation tool that is based on a concept called ‘incremental builds’. In this article, we’ll show you how to set up Gradle on Debian 11.