Docker For Beginners

Reading Time: 16 minutes

What is Docker?

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Docker is a containerization software that is used for automating the deployment and management of applications within an isolated environment. This software allows us to “pack” and ship an application, along with all of its needed files, libraries, and dependencies, into a “docker container“. That container can then be easily ported to any Linux system that contain cgroups support within the kernel, and provides a container management environment. Docker is one of several containerization implementations (not to be confused with virtualization) based on this cgroups mechanisms built into the Linux kernel.

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How to Install Yarn on Windows

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What is Yarn?

Yarn is an alternative npm-client used for working with JavaScript as a package manager that was developed by the Facebook team. It also allows us to share code with other developers around the world and use solutions from other developers. The code itself is distributed via packages, sometimes referred to as modules. The package contains a .package.json file which describes the contents, as well as all the associated distributed code. In comparison with npm, Yarn is considered to be a better alternative and surpasses NPM in the following parameters:

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How to Install OBS on Linux, Windows and MacOS

Reading Time: 5 minutes

What is OBS?

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OBS (Open Broadcaster Software) is a free and open-source video recording and livestreaming software program that is written in C, C ++, and Qt and developed by the OBS project and a community of independent developers. It is mainly used for streaming and recording videos. It supports a wide range of plugins to extend the functionality of the program.

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JS frameworks: React, Angular, or Vue?

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Introduction

In this tutorial, we will discuss three of the most popular javascript frameworks: React, Angular, and Vue. We will look at the pros and cons of each, their usage statistics, discussions about which one to choose, and which one should be studied for future use. Because programming languages and frameworks are all tools in a developers tool belt, and each has its place. It is worth learning tools you find meaningful, useful to accomplish a task that’s not only convenient, but is suitable for specific tasks. Again, we should remind ourselves that because these changes occur rapidly, after a year and a half a year, the situation can radically change.

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How to Install Jitsi Meet on Ubuntu 18

Reading Time: 9 minutes

What is Jitsi?

Jitsi is a set of open-source projects that allow you to create a secure video conferencing system for your team. It has features such as superior sound quality, excellent encryption and privacy, multi-platform and much more. The Jitsi client can work both in the application and in the web browser. You can broadcast your desktop as well as individual windows, and invite users using URL-link. We will be installing Jitsi on Ubuntu 18.04 server. We will install additional components such as Java’s OpenJdk, Nginx to correctly install, configure and use it. Let’s talk a bit about the components.

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How to Set Up and Manage Sudo Permissions

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What Is Sudo?

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credit to: XKCD

Sudo is a Linux program meant to allow a user to use root privileges for a limited timeframe to users and log root activity.  The basic thought is to give as few privileges as possible to a user while allowing  the user to accomplish a task. The term “Sudo” means substitute user, and do. It is a program used for managing of user permission based on a system configuration file. It allows users to run programs with the privileges of another user, by default, the superuser. The program is supplied for most UNIX and Linux-based operating systems.

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How to Install Java on Ubuntu, Windows, and MacOS

Reading Time: 6 minutes

What is Java?

Java is considered one of the most popular programming languages. Java is a typed object-oriented programming language developed by Sun Microsystems (and subsequently acquired by Oracle). Development is mainly performed by a community organized through the Java Community Process. The language and the main technologies that implements it are distributed under the GPL but the trademark rights are owned by Oracle Corporation. Code written in Java (using the JVM – Java Virtual Machine) is transformed into bytecode and due to this, programs can run on any system where the JVM is installed. Therefore, Java is often called a cross-platform language. Most often, Java is used to develop backend programs and android applications.

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How To Install PyCharm on CentOS 7 and 8

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What is PyCharm?

PyCharm is an IDE (or Integrated Development Environment) for the Python programming language. It is a cross-platform development environment that is compatible with Windows, macOS, and Linux. It provides a tool that integrates code analysis, graphical debugging, unit testing, and also contains an integrated terminal that supports development on remote hosts and virtual machines.

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How to Install and Configure Samba on Ubuntu 18

Reading Time: 9 minutes

What is Samba?

Samba is an open-source software package that is released under a GPL (General Public License). It allows us to access a shared network drive and printers across various operating systems using the SMB/CIFS protocol. Samba has both client and server components. Samba uses the SMB protocol, which is necessary when accessing assets on a file server from a Microsoft computer. Samba can also work as a domain controller that is compatible with Microsoft Active Directory. 

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How to Install SaltStack on Ubuntu 18

Reading Time: 6 minutes

What is SaltStack?

SaltStack is an open-source infrastructure management platform built on a dynamic communications bus. The main structure of SaltStack contains two main components for work: one Salt Master and several Salt Minions. Salt Master is the main control system used to send commands to Salt Minion and their configuration. Salt Minions (they are also called Nodes) are subsystems that work on managed servers and receive commands from the master, as well as their configuration. At least two servers are required for interaction settings. One for the Master and one for the node. All nodes are configured in the same way.

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