SD and microSD cards are not known for their speed, but their slim size makes them the default choice for storage in the Raspberry Pi. Most users will install the Raspberry Pi OS to a microSD or SD card, and then use additional hard drives if the need for greater read and write speeds arises. In order to use an SD card or microSD card for storage on the Raspberry Pi, it should pass the benchmark test for minimum speeds.
Hardware
How to manipulate partition tables with fdisk, cfdisk and sfdisk on Linux
Fdisk, cfdisk and sfdisk are command line partitioning utilities included by default in all Linux distributions. They provide different interfaces to the same set of functions: while they all can be used interactively, only sfdisk is script-oriented. They support DOS, GPT, SGI and SUN partition tables.
How to test SD card speed on Raspberry Pi
All Raspberry Pi models come with either an SD or microSD card slot. Since the Raspberry Pi does not come with any storage built into the device, most users will opt to use the SD slot to run the Raspberry Pi operating system as well as for storing additional files. But, the SD interface can leave a lot to be desired when it comes to speed.
How to check CPU frequency on Raspberry Pi
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.
How to set resolution on Raspberry Pi
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.
How to check disk space on Raspberry Pi
There are a few tools at your disposal for checking the disk space on a Raspberry Pi system. These tools and Linux commands can be used to check a storage device’s capacity (such as that of your micro SD card) and the size of the files on it, or just to check the size of a particular directory or file. We will show you how to get a visual representation of how the total storage space is being used on your Raspberry Pi, as well as a few commands that you can enter into the terminal to quickly find the relevant storage stats on your Raspberry Pi.
How to check Raspberry Pi RAM size and usage
A Raspberry Pi computer has a fixed amount of RAM built into the PC board. Since Raspberry Pi’s are micro sized, single board computers, the amount of memory is not upgradeable or expandable. Instead, you would need to purchase a more robust Raspberry Pi model or opt for one of the Pi’s that come with more RAM. Different Raspberry Pi models have various amounts of RAM that come installed. Some Raspberry Pi models can have varying amounts of RAM, along with different price points.
How to check Raspberry Pi model
You finally got your hands on a Raspberry Pi, but which model is it? There are several different Raspberry Pi models in circulation, as the Raspberry Pi Foundation has kept up with evolving technology to release better single board systems over the years. There are also different models to suit different price points, depending on your budget and how much CPU power and RAM you want your device to have. Fortunately, it is easy enough to get the information we are after.
How to format USB with exFAT on Linux
exFAT stands for Extensible File Allocation Table and is a format made by Microsoft for use on devices like USB flash drives. In general, you do not hear a lot about exFAT these days, but it remains a viable format that is compatible with Windows, MacOS, and Linux, so it is a good choice for a flash drive that you plan on using with a variety of different systems. Some manufacturers even use exFAT as the default format for their SD cards or other products.
Check CPU and RAM usage of a Kubernetes pod
One of the most essential parts of Kubernetes administration is to keep an eye on resource usage for your master and worker nodes. Checking how much CPU and RAM resources a pod is utilizing can tell you if further scaling needs to be considered in order to deal with the increased load, or if a new configuration or hardware upgrade is in order. In this tutorial, we will look at different ways to check CPU and RAM usage of a Kubernetes pod on a Linux system.
Control CPU and RAM usage in Kubernetes
Kubernetes is typically used to scale containerized applications across many worker nodes. With more and more applications being deployed into your Kubernetes cluster, managing CPU and memory utilization becomes a crucial issue. In this tutorial, we will look at how to manage CPU and RAM usage in Kubernetes on a Linux system, in order to configure resource limits and ensure that containers are not using more than they are allotted.
Solving the ‘Segmentation Fault’ Error on Linux
The Segmentation Fault error (often called just segfault) is usually related to a memory issue whereby a process tries to access unallocated memory that does not belong to it, and the Linux kernel ends up terminating the process and issuing the error as a means to mitigate further issues. It can be tricky to diagnose and usually does not give us much to go off of, so we must dig through log files and try a variety of methods to figure out the root problem. In this tutorial, we will go through step by step instructions to solve the Segmentation Fault error on a Linux system.