How to Install Hadoop in Linux
Apache Hadoop is an open-source, distributed computing framework designed to process large volumes of data across clusters of computers. It is particularly useful for big data processing and analysis. In…
How to Install PyOpenGL package on Linux
PyOpenGL is a popular and widely-used package for Python that allows developers to create 3D applications, games, and other graphics-intensive programs by providing an interface to OpenGL, which is the…
How to Install Telnet on Linux (CentOS, RHEL) using the YUM package manager
Although Telnet is not considered the most secure protocol for remote access, it can still be helpful for certain network administration tasks, such as testing and troubleshooting network services. In…
How to Install Telnet on Windows, MacOS, Linux
Telnet is a network protocol that allows users to access and interact with remote computers over the internet. It was widely used before the advent of more secure protocols such…
How to Find Big Files Size on Linux RHEL/CentOS
For Linux administrators, there are times when we need to identify the files that are consuming the most space on our Linux server, leading to low free space. This is…
How to Update CentOS or Upgrade CentOS to the Latest Version
Recently, the latest version of CentOS 7.3 was released. All users of CentOS 7.0, 7.1 and 7.2 can upgrade their system to the most recent. This quick guide will explain…
How to Enable SSH Root Login on Ubuntu 16.04
While enabling SSH root login on Ubuntu 16.04 is not recommended due to security risks, there might be situations where you need temporary root access via SSH. In this guide,…
How to Migrate LVM or Volume Group to New Linux Server
This article will describe on how to move or migrate LVM and volume group from one server to another. If you are working in a production environment then you have…
How to Change default runlevel in CentOS 7 / RHEL 7
In CentOS 7 and RHEL 7, the systemd process replaces the init process for starting services at boot time and also for changing the runlevels. It uses “targets” instead of…
How to Disable IPv6 on Redhat / CentOS 6 / CentOS 7
This howto will show you how to disable IPv6 on RHEL 6/7, CentOS 6, and CentOS7. IPv6 is enabled by default. In this article, I summarize 3 configuration which needs…
How to Install and Setup Munin on CentOS 7
Munin is open source and free software for monitoring computer system, network monitoring and application infrastructure monitoring software. Munin offers monitoring and alerting for servers, switches, applications, and services. Munin…
How to Setup a Login Banner on a Linux system
A login banner is a message displayed to users before they log into a Linux system via SSH or the console. It can be used for legal purposes, security warnings,…