The CPU frequency, also known as the clock speed, is a measure of how many cycles per second your Raspberry Pi’s CPU can execute. It is measured in gigahertz (or GHz). In essence, the faster your CPU’s clock speed, the faster your Raspberry Pi can process requests. This will translate into a more responsive and snappier experience for the user as they do resource intensive tasks.
Once you get your Raspberry Pi booted up and have the monitor plugged in via HDMI, you may need to manually set the resolution to get things looking how they should on your screen. The Raspberry Pi OS makes this pretty easy to do from the GUI menus, and also gives us the option to configure headless resolution for VNC connections. So, even if you do not have a screen plugged into your Raspberry Pi, we can still configure the resolution for remote connections. In this tutorial, you will see how to set the resolution on a Raspberry Pi.
Raspberry Pi devices are commonly used to host a variety of lightweight services as they can do so very affordably. A simple example would be a web server, which handles user requests whenever someone navigates to a website. In order to make sure these services are accessible either on the local network or over the internet, we must make sure that the corresponding ports are open. Checking for open ports is also an essential security task that all administrators should perform in order to make sure that their Raspberry Pi only has the ports open that are necessary.
Discord is an application for text, image, video and audio communication, which was developed for video gaming communities. Discord runs on various Linux distributions of your choice and, in particular, on Ubuntu 20.04. With Discord installed, you will be able to join chat groups, create your own voice server, stream the video game you’re playing, and keep in touch with all other Discord users for free. The objective of this guide is to install Discord the gamer’s chat platform on Ubuntu 20.04 Focal Fossa Linux.
NTFS stands for New Technology File System and is developed by Microsoft for use on their Windows operating systems. NTFS is not normally used on Linux systems, but has been the default file system on Windows for many years. Linux users are probably used to seeing drives with the ext4 file system, which is ordinarily the default and certainly the most widespread in the Linux realm.
firewalld is the default firewall on Red Hat Enterprise Linux, and it’s enabled by default, but it’s possible to disable the firewall on Redhat, and you’ll also see how to check firewall status in Linux. Normally, there should not be a need to disable the firewall, but it may be quite handy for testing purposes or other scenarios. In this tutorial, you’ll see how to check the status of firewalld, enable or disable the service from starting automatically upon system boot, and how to stop or start the firewalld service in RHEL.
If you want to run Ubuntu Linux on your system but you already have Windows 10 or Windows 11 installed and don’t want to give it up completely, you have a couple of options. One option is to run Ubuntu inside of a virtual machine on Windows 10/11, and the other option is to create a dual boot system. Both options have their pros and cons. A big advantage of a dual boot system is that both operating systems will have direct access to your computer’s hardware – no virtualized hardware and unnecessary overhead.
GNOME is the default desktop environment for Ubuntu 20.04. If you don’t yet have a desktop environment installed (as is the case for Ubuntu Server), or have a different GUI and would like to switch to GNOME, it’s very easy to do. GNOME includes a variety of desktop applications and its aim is to make a Linux system easy to use for non-programmers. In this tutorial, you will learn how to install the GNOME desktop environment on Ubuntu 20.04 Focal Fossa Linux.
In this tutorial, you will learn how to connect to WiFi from command line on Ubuntu using Netplan. While this method can be used on Ubuntu desktop systems with a GUI, it is especially useful if you’re running a headless Ubuntu 20.04 system like a Raspberry Pi or need to connect to Wifi on Ubuntu Server. Follow along with us below as we connect to a WiFi on command line via SSID and network key.
The purpose of this tutorial is to install a desktop environment GUI on Ubuntu 20.04 Focal Fossa, whether you already have a GUI installed and wish to use a different desktop environment, or if you are only using the command line and would like access to a GUI. You can also use these instructions to install a GUI on Ubuntu Server 20.04, which doesn’t have a desktop environment installed by default. Follow along with our instructions below to install a GUI on Ubuntu 20.04 Focal Fossa Server and Desktop.
In this tutorial, we will see how to use Bash arrays and perform fundamental operations on them. Bash, the
Bourne Again Shell, is the default shell on practically all major Linux distributions: it is really powerful and can also be considered as a programming language, although not as sophisticated or feature-reach as Python or other “proper” languages. Furthermore, Bash scripting is a must-have skill for any Linux system administration job.
Are you receiving a
exit code 127 error when trying to execute a Bash script? This means that your Linux system was not able to find the command referenced inside of the script, which could indicate that the path to the command is not valid, or the command is not installed at all. In this tutorial, we’ll explain what causes this “command not found” error and show you how to fix it.