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  1. Jarret B

    Power supply voltage output query

    The power supply voltage may be just a standard power supply that they did not want to have to make a special one for the laptop. The laptop may step down the voltage. For in a car running off of the power supply, look for an inverter. One end has a cigarette lighter connection. The other...
  2. Jarret B

    Stream Music from Linux to Google Home

    Ah, the perfect use!
  3. Jarret B

    Bash 05 – Script Logic

    The 'or' using the double-pipe '||' runs the second command if the first one fails. It is a sort of backup command or a cleanup command to handle the first command failing.
  4. Jarret B

    Windows 11 Gaming in VirtualBox

    I know most of you may see the title and think, ‘Not again!’. This install is an un-bloated version of Windows 11 that has minimal requirements for hardware. One that runs very well in VirtualBox and allows some higher end software to run smoother. Now, I hope I have your attention. But, you...
  5. Jarret B

    LFCS – Kerberos Authentication (Ubuntu)

    Kerberos is an authentication method which helps improve security between systems. For systems that need to access another, such as Secure Shell (SSH), Kerberos is a great way to keep the connection secure. If you have read the previous article on Kerberos Authentication with CentOS, this will...
  6. Jarret B

    Stream Music from Linux to Google Home

    If anyone has a Google Hub device of some sort, they know how handy they can be for getting information when you ask a question. But there is another use that most people may not be aware of doing. Streaming music, not only to one speaker, to many. Personally, I have six Google Home Devices...
  7. Jarret B

    Bash 05 – Script Logic

    Probably the most important aspect of scripting is using logic operators to control the flow of the script. Sometimes a script needs to do more than run each command in order from the beginning to the end of the script. There are many times when you need to control the flow of a script to allow...
  8. Jarret B

    Home Streaming Server

    I wanted to keep it simple as well as make it so users can make a simple file-sharing system on their network. Using SSH is a lso a plus to learn.
  9. Jarret B

    Big Sur (11.06) on Linux

    I've been messing around with Big Sur again. I didn't do the update, but the rest worked fine. I do know on a Core-i3 with 8GB of RAM dedicated to the virtual machine, it is laggy. I'm trying to find an alternate method of making macOS run. If I figure anything out, I'll get an article on it out.
  10. Jarret B

    LFCS – Kerberos Authentication (CentOS7)

    Kerberos is an authentication method that can assign a user a ‘ticket’ after the first sign-on. Once a user has entered a correct password, then they are granted a ‘ticket’ to allow connection again without a password. The key thing to remember is that the ‘ticket’ expires after a certain amount...
  11. Jarret B

    DVD and Blu-Ray Conversion

    For many users, you may have a need to make a digital copy of a DVD or Blu-ray to view on your system. Viewing can be done remotely if you make a DLNA Server, as I covered in the article ‘Home Streaming Server’. The problem with making a digital copy from most discs is that they incorporate...
  12. Jarret B

    Bottles - Run Windows software on Linux with Bottles

    Bottles is a Graphical User Interface (GUI) to aid in setting up the WINdows Emulator (WINE). Bottles has many benefits over WINE by itself. For anyone who uses WINE, you need to look into Bottles. Benefits Bottles provides more abilities than WINE alone and includes the following...
  13. Jarret B

    Bash 04 – Input from User

    A very important aspect of scripts is getting input from the user. If you think of most commands used in your system from a command-line, they mostly use input parameters. Parameters are used to specify what the command is to do. For example, to delete a file, you need to specify which file to...
  14. Jarret B


    It should.
  15. Jarret B

    Optimizing Linux

    Most Linux systems run well since Linux is not an intensive Operating System (OS) as others.For some systems though, the system may not be optimized to provide great performance. The performance can depend on how the system is being used. Two identical systems can show different speeds...
  16. Jarret B

    LFCS – Client OpenLDAP Authentication

    We previously set up OpenLDAP servers for both CentOS7 and Ubuntu 18.04.9 Even though the setup of OpenLDAP is not on the LFCS exam, setting up a client is on the exam. Make sure you have two systems you can use for setting up and testing authentication. The systems can be virtual, like...
  17. Jarret B

    Home Streaming Server

    I am making a DLNA Server to be able to stream audio, video and pictures within my house. This article will go over the details of what I have done for my system. I hope some of you can duplicate this if you need to, as well as comment on improving the server. There are quite a few concepts in...
  18. Jarret B

    BASH 03 – Command-line Processing

    It is important to understand how the command-line processing occurs. The procedure of examining the command issued is not as straight-forward as you might think. Going over a command to see how processing is achieved can show you how the command can fail. It can help you determine why it...
  19. Jarret B

    Ubuntu Docking

    Operating Systems have some type of docking mechanism that allows a user to choose the apps to run. By default, Ubuntu 20 and 21 use Gnome. The typical dock placement is to the left side of the desktop. With Linux being modular, we can change the docking program and try something new. Looking...
  20. 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...