DNF (Dandified Yum) is an RPM-based package manager capable of managing packages in Linux. Today, we’ll go through 20 DNF command examples. These examples will teach you how to manage packages with ease. You can use DNF to install and update packages. It is a popular package manager and comes pre-installed as the default package… Read More »
fdisk (fixed disk or format disk) is a command-line utility for creating and managing disk partitions in Linux and other Unix-based systems. In other words, fdisk is a command used to create, view, modify, and delete partitions on a hard drive. fdisk works by making changes to the disk’s partition table. The partition table stores… Read More »
What are Linux logs? Linux logs are a critical component of the OS that gives a snapshot of everything that has been happening in the system. It helps in tracking events within the system such as process initiation/failure, errors in running applications, login failures, boot-up process etc. They are essential for debugging running applications, tracking… Read More »
Lets say you have a wifi adapter on your linux machine whether a laptop or desktop and wanted to check what wifi standards (4/5/6) that are supported on it. One simple way is to check the model of the wifi adapter and lookup the specs online and get all technical details about. The other way… Read More »
Sometimes, we want to run Ubuntu in live mode and test a few programs or commands that need to be installed first. Ubuntu supports installing packages in a live session in the same way as in a fully installed setup. However, when trying to install package in a live session, often times the following error… Read More »
Performance metrics are numbers that measure different aspects of the working state of a cpu and reveal useful diagnostic information. These include cpu usage, clock speed, power consumption, temperature etc. There are many more but for simplicity we shall be focusing on these ones in this article. The metrics can be monitored using tools like… Read More »
1% Low FPS and why it matters 1% Low FPS indicates the worst frame generation times that can cause stuttering if they are way lower than the average fps. Low 1% FPS can arise out of a number of reasons like hardware bottlenecks or some kind of poor configuration that holds back the system from… Read More »
The fstab (File system table) file is a configuration file used by the Linux kernel to mount declared file systems during booting. It contains a set of rules describing where a file system should be mounted, access control for file systems, and additional configuration options for each file system. In this article, we’ll cover the… Read More »
Ram timings are technical specs about ram modules that are installed in laptops or desktops. These number indicate the performance of the ram module interms of how fast they can read and write data. The appear as 4 number set separated by a hyphen, for example like this: 16-16-16-39. Now these numbers tell us how… Read More »
The dmesg command is a powerful tool used to control and read log messages stored in the kernel ring buffer of Linux and other Unix-based operating systems. During boot-up and runtime, the kernel stores messages produced by device drivers, hardware devices, and kernel modules in a ring buffer. These stored log messages can be reviewed… Read More »
What is Snap Snap is a software packaging and deployment system (similar to deb) developed by Canonical for Linux. It has version control capabilities which help maintain multiple releases of a particular application (aka snaps). Though it is a proprietary solution from Canonical, Snap is available for other linux distros like Fedora, CentOS and Manjaro… Read More »
Grep Command Grep command in Linux is primarily used to search files for specific patterns of text, but there is a lot more it can do. The name “grep” is derived from the command used to perform a similar operation “ed” text editor with the operation: g/re/p ((globally search for a regular expression and print… Read More »
PyOpenGL is an python module that implements OpenGL functions in python allowing you to write OpenGL applications using Python. With OpenGL you are able to write applications that use “GPU acceleration”. So if you have an Nvidia RTX 3060 gpu on your system, the opengl functions will use it to render the 3D graphics on… Read More »
The 5Ghz band is normally used for wifi5/wifi6 and supports higher data transfer speed. Wifi5 works exclusively on 5ghz band only, but wifi6 can work on both 2.4 and 5ghz. However you might be surprised to know that even wifi4 (802.11n) supports 5ghz band though it will deliver its lower speed only. A lot of… Read More »
Routers are basically embedded devices (or system), and most modern routers run on linux. Think of it like a mini computer that has its own cpu, storage space, ram memory, ethernet ports, wifi chipset, and optionally a usb port. Functionally these are single board computers similar to a raspberry pi. They software that runs on… Read More »
Lets say you upgraded your home or office network with new wifi routers and devices then you should see if your devices are using the new wifi standards like Wifi5 or Wifi6, to ensure high speed data transfer. On Windows it is easy to check, but on linux we need to run a few commands… Read More »
On a linux system you can get details about the wifi adapter using commands like iw, iwconfig, iwlist, ethtool etc. However if you are a usb wifi adapter then it can be tricky. When you plug a usb wifi adapter on your system, linux will not show the details of the device in the lspci… Read More »
In this article we take a quick look at testing wifi throughput over lan using a simple tool called iperf. Wifi lan speed matters when you are transferring large files across devices. For example transferring a big video or zip file from ipad or smartphone to desktop pc connected on ethernet. Wifi speed is not… Read More »
After you install Ubuntu inside VirtualBox its necessary to install guest additions in order to enable enhanced features like native screen resolution, seamless windows, shared clipboard, shared folders and few others. Without it, you would probably have to work with a standard resolution like 1024×768 as the default virtual machine does not support every possible… Read More »
OpenVPN OpenVPN is open source, secure and robust. It is readily available for most platforms and can be setup quickly. The SurfShark native client also uses OpenVPN underneath. It supports both tcp and udp based wrappers for vpn traffic over internet. UDP is significantly faster than tcp and works really well. There are multiple ways… Read More »