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How to Install and Manage Podman Containers in RHEL Systems

Most of us are familiar with Docker as a popular Container runtime for major Linux distributions. However, when it comes to the RHEL-based distributions such as CentOS, Rocky Linux, and AlmaLinux, Docker is not officially supported. Learn how to instal…

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How to Create Sudo User in RHEL, CentOS, Rocky & AlmaLinux

The Redhat Enterprise Linux (RHEL) ecosystem hosts several interesting Linux-based OS distributions. The OS pair AlmaLinux and Rocky Linux are exciting replacements for the discontinued CentOS distribution.
The post How to Create Sudo User in RHEL, Cen…

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How to Install Remi Repo in RHEL, CentOS, Rocky, and AlmaLinux

RHEL Linux, Rocky Linux, AlmaLinux, and CentOS systems are all familiar with the YUM package manager, which is used to easily search, download, install, and delete various targeted software packages. Also, we need the YUM package manager for frequent s…

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Steps to Install Rocky Linux 8.4 with Screenshots

Rocky Linux is a Community-based Enterprise Operating System with a complete binary-compatible release using the Red Hat Enterprise Linux (RHEL) operating system source code. The advantage of Rocky Linux is that it is completely free to install on any 64-bit x86 and ARM64 (aarch64) system. Let’s get it up and running with the illustrated guide. […]

The post Steps to Install Rocky Linux 8.4 with Screenshots appeared first on Linux Today.

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How To Install Kubernetes Cluster Using Kubeadm in RHEL 8

In this article, we are going to learn about Kubernetes cluster installation using Kubeadm in RHEL 8, and its clones like AlmaLinux 8, CentOS 8, and Rocky Linux 8.
The post How To Install Kubernetes Cluster Using Kubeadm in RHEL 8 appeared first on Lin…

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How to Set GRUB2 Password in RHEL, CentOS, and Fedora Linux

GRand Unified Bootloader (GRUB) is a default bootloader in all Unix-like operating systems. As promised in our earlier article “How to reset a forgotten root password“, here we are going to review how to protect GRUB with passwords.
The post How to Set…

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Basic and Most Useful ssh Client Commands for Linux

SSH is one of the main key services in Linux/Unix-based systems. SSH represents Secure Socket Shell. SSH protocol is used to access the remote server/system with an encrypted method of login using the default TCP/IP port 22 or a custom-based port number. This service is mainly used by System and Network Administrators to execute commands […]

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How to Install Suricata on RHEL, Rocky, and AlmaLinux

Suricata is popular as a result of it being an independent and open source threat detection engine. It’s a lifesaver for network administrators that are looking for a seamless and performant way to examine and manage network traffic issues. Learn…

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How to Setup MySQL Replication in RHEL, Rocky and AlmaLinux

Data replication is the process of copying your data across multiple servers to improve data availability and enhance the reliability and performance of an application. In MySQL replication, data is copied from a database from the master server to other nodes in real-time to ensure consistency of data and also to provide backup and redundancy. […]

The post How to Setup MySQL Replication in RHEL, Rocky and AlmaLinux appeared first on Linux Today.

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How to Solve Error “rpmdb damaged header” in Fedora, RHEL

This guide explains how to solve error rpmdb damaged header by rebuilding the RPM database in Fedora, RHEL, CentOS, AlmaLinux and Rocky Linux.
The post How to Solve Error “rpmdb damaged header” in Fedora, RHEL appeared first on Linux Today.

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How to Disable Package Updates Using YUM/DNF in RHEL Linux

The DNF (Dandified Yum) is the next-generation version of the YUM (Yellowdog Updater, Modified), is an open-source default package manager for Red Hat-based Linux distributions, that is used for getting, installing, upgrading, removing, and querying pa…

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CentOS Stream 9 is Now Generally Available

The release of CentOS Stream 9 has been carried out before CentOS Linux 8 expires at the end of this year. The distro is based on Fedora 34, the same code base that RHEL 9 uses.
The post CentOS Stream 9 is Now Generally Available appeared first on Linu…

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An Introduction to DNF with 20 Examples

DNF stands for Dandified YUM, a completely updated version of YUM Package Manager. It was originally introduced on Fedora 18 and has now become the default package manager on Fedora 22, RHEL, and CentOS 8 to handle the RPM package management. DNF improves the deficiencies of YUM, including poor performance, high memory usage, and slowness […]

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A Basic Guide to the ‘ls’ Command in Linux with Examples

This guide will teach you how to use the ‘ls’ command in Linux. All the below examples of the ‘ls’ command are tested on RHEL/CentOS 7.6.
Linux/Unix platform ‘ls’ command is one of the most repeatedly used commands. …

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How to Use ‘cat’ Command in Linux with Examples

This guide will teach you how to use the cat command in Linux. All the below examples were tested on RHEL/CentOS 7.6. ‘Cat’ is one of the most commonly used commands in Linux operating systems (short for “concatenate”). This is a standard Unix command that concatenates and displays files. Using the cat command, you can […]

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How to Configure a SMTP Relay Host in Sendmail

In this article, you will learn how to configure a Sendmail server to forward all mail generated from localhost to another SMTP server in the RHEL system.
The post How to Configure a SMTP Relay Host in Sendmail appeared first on Linux Today.

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The Basic ‘ps’ Command to Monitor Linux Processes (with Examples)

Linux’s ps (processes status) is used to check the information on its running processes. The process is nothing but a program in Linux/Unix to execute a specific task. The ps command in Linux is used to monitor all the currently running activities along with USER, PID, %CPU, %MEM, VSZ, RSS, TTY, STAT, START, TIME, COMMAND. […]

The post The Basic ‘ps’ Command to Monitor Linux Processes (with Examples) appeared first on Linux Today.

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How to Check if an RHEL System Is Vulnerable to a CVE

In this guide, learn how to check if an RHEL (or CentOS 6/7/8) system is vulnerable to a CVE. Also, learn how to mitigate these issues if you find your system is vulnerable.
The post How to Check if an RHEL System Is Vulnerable to a CVE appeared first …

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How to Install Latest LAMP Stack in RHEL-based Distributions

The web and database servers, along with the well-known server-side language, are not available in their latest versions from the major distributions’ official repositories. If you like to play or work with cutting-edge software, you will need to eithe…

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Basic Echo Command with Examples in Linux

The echo command is one of the most basic and important commands in scripting and programming. This command displays or prints arguments at the terminal. The command is included in all distributions (operating systems) as either the shell or bash. Usually, developers or programmers use echo commands in both debugging and building of products such […]

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