How to Install Apache on Ubuntu 18.04/19.04/20.04
Apache is one of the most popular web servers in the world. It is an open-source and cross-platform HTTP server that powers a large percentage of the Internet’s websites. Apache …
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How to Check if a File or Directory Exists in Bash
Many times when writing Shell scripts, you may find yourself in a situation where you need to perform an action based on whether a file exists or not. In Bash, …
How to Use uname Command in Linux
uname is a command-line utility that prints basic information about the operating system name and system hardware. In this article, we will show you how to use the uname command. …
How to Check the Kernel Version in Linux use Linux Command
The kernel is the core component of an operating system. It manages the system’s resources, and it is a bridge between your computer’s hardware and software. There are various reasons …
How to Set Up a Firewall with UFW on Ubuntu
A firewall is a tool for monitoring and filtering incoming and outgoing network traffic. It works by defining a set of security rules that determine whether to allow or block …
How To Set or Change Timezone on Ubuntu 20.04
Using the correct timezone is essential for many systems related tasks and processes. For example, the cron daemon uses the system’s timezone for executing cron jobs, and the timestamps in …
Ln Command in Linux (Create Symbolic Links)
A symbolic link, also known as a symlink or soft link, is a special type of file that points to another file or directory. In this guide, we will cover …
How to Use At Command in Linux
at is a command-line utility that allows you to schedule commands to be executed at a particular time. Jobs created with at are executed only once. In this article, we …
How to delete a group using the groupdel command in Linux
In Linux, groups are used to organize and administer user accounts. The primary purpose of groups is to define a set of privileges such as reading, writing, or executing permission …
How to Install Nginx on Ubuntu 20.04
Nginx pronounced “engine x” is an open-source, high-performance HTTP and reverse proxy server responsible for handling the load of some of the largest sites on the Internet. It can be …