The Linux kernel is the core or main component of the Linux operating system. The first kernel release was first written in 1991 by Linus Torvalds, who at the time, was a computer science student at the University of Helsinki. [...]
James Arthur
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Gzip and Keep Original File in Linux
Gzip command by default delete the original file and replace it with a new compressed file with .gz extension. In this article, I am going to show you how to gzip file and keep the original ones intact. Previously, we [...]
Auto-cpufreq - CPU Speed and Power Optimizer for Linux Systems
This guide, we explore yet another monitoring tool - auto-cpufreq - a CPU speed and power optimizer. In an earlier article, we looked at a user-friendly resource monitor known as Bashtop and saw just how easy it is to keep [...]
Bpytop - An Efficient Resource Monitor in Linux
For terminal lovers, having the ability to monitor your system resource usage is just as crucial. Being aware of your systems' resource utilization helps you make informed decisions in general system maintenance. There are a few options out there such [...]
Exa - A Modern Replacement for ls Command
Exa is a nifty command-line tool that has received lots accolades for being a contemporary replacement for the good old ls command. And rightfully so given its ability to use different colors in displaying various file types, file permissions and [...]
How to Add a Samba User in Linux
Samba is a free and open-source networking service that functions in a client/server networking model. It allows for file sharing across both Windows and Linux/Unix operating systems and leverages the SMB (Server Messaging Block) and the CIFS (Common Internet File [...]
How to Connect to WiFi from Terminal on Ubuntu 20.04
If you have a wireless-enabled computer or laptop, you can connect to the internet. On Ubuntu you can connect to a Wi-Fi network on the terminal using the following command-line tools: nmtui nmcli Let's see how each of these tools can [...]
How to Diff Command Colorize Output on Linux
Diff is a command-line utility that helps users to visually compare differences between 2 files line by line on a Linux/Unix system. Colordiff utility is a Perl script that is an improved version of diff. It colorizes the output so [...]
How to Add a User to Sudoers on Ubuntu
In Linux philosophy, running privileged tasks as the root user is highly discouraged. The reason is simple - all it takes is for the root user to run a fatal command and the entire system comes apart. For this reason, [...]
MySQL Create User Accounts and Grant Privileges
MySQL is arguably one of the leading and widely used opensource database management systems. It's the preferred relational database management system of choice in most web hosting companies and other cloud providers. In this tutorial, we will look at how [...]
How to Install PHP 7 on CentOS 7
PHP is a popular, free and opensource scripting language used mainly for web development. At the moment the current version of PHP (at the time of writing this tutorial) is PHP 7.3.14. However, CentOS 7 ships with PHP 5.4 by [...]
How to Stop and Disable Firewall on CentOS 8
A firewall is a security feature that filters incoming and outgoing traffic and keeps at bay potentially malicious applications. Additionally, a firewall gives the systems administrator the authority to determine which services and ports to allow and which ones to [...]
How to Install and Use Grub Customizer on Ubuntu
Grub customizer is a handy graphical tool that you can use to change the default settings in the grub bootloader. The tool allows you to add, or rearrange entries in the boot menu. Additionally, You can modify kernel parameters, change [...]
Echo Command in Linux with Examples
Echo is a Unix/Linux command tool used for displaying lines of text or string which are passed as arguments on the command line. This is one of the basic command in linux and most commonly used in shell scripts. In [...]