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  1. Jarret B

    LFCS – Creating LDAP on Ubuntu

    I hope you have looked over the previous article to set up OpenLDAP on CentOS 7 system found here. This will build on that article somewhat. We are going to install and configure OpenLDAP on Ubuntu and create an initial database. I did not do some things done here in the previous article, so...
  2. Jarret B

    Bash 02 – Variables and Such

    Within BASH, you can use variables. Variables are names that can represent specific information. If you remember your days in math, specifically some stage of algebra, you may recall variables. There were all the letters of the alphabet, mainly X and Y. In BASH, we can use variable names, not...
  3. Jarret B

    RPCS3 - Playstation 3 Emulator

    I know the PlayStation 5 is out, but emulators are usually years behind the console. But for some users, the old games are the ones they love the most. In this article, I’ll cover the installation and setup of RPCS3 and starting a ROM file. The process is a fairly quick 5 steps: Download...
  4. Jarret B

    LFCS – Creating OpenLDAP Server on CentOS 7

    Adding Lightweight Directory Access Protocol (LDAP) to a server is not required for the LFCS exam, but it does require you to authenticate users using LDAP. To be able to perform that function, you need LDAP on your test system. You may not want to know how to do this procedure, but it never...
  5. Jarret B

    Dolphin – Wii Emulator (even the newest versions of Ubuntu)

    With gaming consoles being sought after at an all-time high, most consoles are hard to find or too expensive. Older consoles, such as the Wii, are favorites for some people. For those running Linux, we can use a Wii emulator called Dolphin to play Wii games. The process is a fairly simple one...
  6. Jarret B

    BASH 01 - Script Basics

    This article is the first in a series of articles to cover Bash Scripting. More articles will follow which will build on each other, so make sure you look over each article. It is preferable to read the articles in order (which is why I will number them). Scripting is a very useful ability for...
  7. Jarret B

    LFCS – Pluggable Authentication Module (PAM)

    With every type of Operating System (OS), there needs to be security in place. With CentOS or Ubuntu, there is the Pluggable Authentication Modules (PAM). The files allow you to configure security as you need for various areas: Home Directory Creation Password Policies...
  8. Jarret B

    Big Sur (11.06) on Linux

    Quite a few people go through their life with a PC. They are content to use Linux or Windows but have never seen MacOS. Some people may have a desire to see and use MacOS and yet not want to buy an Apple system. I will cover the steps to install the second latest, at the time of this...
  9. Jarret B

    LFCS - Managing Groups

    The previous article covered Managing Users. Administrators need to be able to not only manage new and existing users, but also the Groups that the users can belong to on a system. Keep in mind that these skills are more beneficial in a larger network in a domain-style environment than on a...
  10. Jarret B

    Android 9 on Linux

    Many people would sometimes like to have access to Android. In this article, I will cover the steps to install Android 9 on a Virtual Box machine. Having access to Android on your system can make it easier for accessing apps that are only available on Android. Prerequisites To start...
  11. Jarret B

    Parallel Clustering

    Parallel Clustering allows for multiple systems to run programs together as if they were one system. A Parallel Cluster is also called a Beowulf Cluster. In my previous article, “Linux Cluster – Basics”, I covered the various types of Clusters. I went through the process of setting up a...
  12. Jarret B

    LFCS – User Account Management

    With any Linux system, you may need to add users. Additional Users may be needed when adding Services such as Samba. Being able to manage user accounts is a very important task, especially if working on multiple systems in a business environment. There are four main points of user account...
  13. Jarret B

    Linux Cluster – Basics

    I hope to cover a basic understanding of clustering as well as give you a way to demonstrate making a small virtual cluster. When most people hear the word ‘cluster’ they may think that this is a group of computers acting as one system. The idea is a very basic concept of clustering, but...
  14. Jarret B

    LFCS – Login Scripts

    When a user logs into a system there are scripts that are executed. These scripts can be manipulated to allow specific programs to be run, services to be started or stopped, environment variables to be set or modified, etc. There is no limit to what can be done with login scripts. The same...
  15. Jarret B

    LFCS – Managing Software – Ubuntu

    With any Linux system, managing the system software is a major part of keeping the system working properly, Ubuntu is no exception. In my previous article, I covered this information for CentOS, this article will cover the Ubuntu side of Managing Software. There is a lot of information in...
  16. Jarret B

    Portable Raspberry Pi 400

    The Raspberry Pi Foundation (raspberrypi.org) has released a new Pi, the Raspberry Pi 400. The 400 is encased inside a keyboard. The Raspberry Pi 400 reminds me of my first computer, a Texas Instruments 99/4a. It was a keyboard you hooked up to your television. The 400 is similar but...
  17. Jarret B

    Flatpak and WhatIP

    Anyone using Linux has an understanding, even a basic one, of installing software. Linux comes with repositories of software for installation. The software is installed using the ‘apt’ command. Other repositories exist which require different commands. Other repositories include...
  18. Jarret B

    Software Management - RHEL/CentOS

    No matter your use for Linux, be it CentOS or Ubuntu, you will need to manage applications and services. I will cover the ways you can manage your software on a CentOS system, the next article will cover similar management on an Ubuntu system. A lot of information will be covered in this...
  19. Jarret B

    Create Your Own Linux Installation

    Some of you may want to have an installation media for installing Linux to multiple systems. Sometimes though, the pre-loaded apps may not be your favorite ones to use. In a business environment, you may need to remove a lot of apps that aren't wanted in the workplace. Installing the...
  20. Jarret B

    LFCS – SELinux

    In a previous article, LFCS – How to Recover ROOT Password, I covered some basics on SELinux. In this article, I will cover a little more about SELinux. SELinux is a way to use Access Control Lists (ACL) to manage the security of the Linux system. NOTE: For anyone familiar with Windows, the...
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