Convert disk images to various formats using qemu-img

In this article, we would focus on how to convert disk images to various formats using command-line utility qemu-img in Ubuntu distribution. Disk images are virtual hard disks which are used with virtual machines. These disk images are used to emulate disk storage devices. Furthermore depending on virtualization used,…

How to Install Screen utility in CentOS 8

Step 1. Package installation: Follow the below command to Install and Enable EPEL repository using yum: dnf install epel-release -y Step 2. Package Installation: The screen utility is available in CentOS 8 base repository, run the Following command to install the package using yum command: dnf install…

How to Stop and Disable Firewall on CentOS 8

1) How to check the status of Firewalld Login to your server via SSH and run the command below to verify or check the status of your firewall. # systemctl status firewalld sample output From the output above, we can evidently see that Firewalld is up and…

How to Installing Plesk for Linux Centos 8 in One Click

One-click installation is a fast and hassle-free way of getting a Plesk server with default configuration up and running. Here is how to do it: First, make sure that your server conforms to the installation requirements: Software Requirements for Plesk Onyx. Then, log in to the…

How to Add a New Disk to an Existing Linux Server Centos 8

fdisk is a command line utility to view and manage hard disks and partitions on Linux systems. # fdisk -l This will list the current partitions and configurations. Find Linux Partition Details After attaching the hard disk of 20GB capacity, the fdisk -l will give the below output. # fdisk…

Install Ansible on CentOS7

Ansible is a zero configuration server management utility. It is used to manage many servers from a central computer. It makes every system administrative tasks easy. In this article, I will show you how to install Ansible on CentOS 7. Let’s get started. Installing Ansible…

How to Install CentOS 8 Server

In this article, I am going to show you how to install CentOS 8 server on your computer. So, let’s get started. Downloading CentOS 8 ISO Image: First, you have to download the CentOS 8 ISO installation image from the official website of CentOS. Now,…

How to Use Kickstart to Install CentOS 7

How to Use Kickstart to Install CentOS 7 You can install CentOS 7 automatically with a Kickstart file. A Kickstart file has the answer to all the questions that the CentOS 7 installer asks when you manually install it. You can create a Kickstart configuration…

Configuring VNC Server on CentOS 8

In this article, I am going to show you how to configure VNC server on CentOS 8 and use CentOS 8 desktop remotely over the VNC protocol. So, let’s get started. Allowing VNC Port Through Firewall: First, you have to allow the VNC port 5900…

How to List Installed Packages on CentOS 7

Linux based operating systems such as CentOS have a modular packaging system. It helps reduce system file size and also makes package installation faster. CentOS is an RPM based distribution. The package files are distributed as an RPM archive. The RPM archives has the file…

CentOS 8 Package Management with dnf Package Manager

DNF is simply the next generation package manager (after YUM) for RPM based Linux distributions such as CentOS, RHEL, Fedora etc.  In this article, I am going to show you how to use the DNF package manager for CentOS 8 package management. So, let’s get…

How to Add a User to a Group on CentOS 7

Linux is a multi-user operating system. It is designed from the start to work with many users simultaneously. Which user can do what operation can be configured very well on Linux. So even though many people shared the same computer, the users and their data…

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