Linux

The ‘cd’ (change directory) command in Linux/Unix is pretty simple. It is one of the standard routine commands for every Linux user. It permits you to switch the directories from one to another via Terminal. The cd command works based on the absolute path and relative path. Note: If you are a newbie or Windows […]

Managing and Administering Linux Servers is a daunting task for every System Administrators. It needs an essential hands-on experience in command line/ CUI. However, many significant projects are coming up to handle Linux Administration tasks via the web console. It helps the new system admins, DevOps, and Developers to handle the system administration task easier. […]

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

A brief introduction about CentOS CentOS is a Community-based Enterprises Operating System, with a free support platform which is using the source code of Red Hat Enterprises Linux (RHEL) distribution. The advantage of using CentOS is completely free to install on any 64-bit x86 systems. We can see most of the Web Hosting companies are […]

What is sudo in Linux Systems? Sudo stands for SuperUserDo, which is a default utility on Unix-Linux based systems. In Linux, normal users are not allowed to execute any administrative commands. But, we can use this mechanism to allow a regular user to run any application or command as a root user or  permit only […]

YUM stands for Yellowdog Updater Modified, it is RPM (RedHat Package Manager) based package management tool for Linux Systems. Yum was introduced in RHEL version 5.10 onward and its deprecated ‘up2date’ command. Yum, command helps all the Users and System Administrators to search the information about packages and then install, update, and remove all the […]

SSH stands for Secure Socket Shell, it is one of the well-known service protocol used to execute an operation to the remote administration over the internet. It provides a very secure passage between the designated computers. Once the connection is established, then SSH provides encrypted sessions for all the public (unsecured) network in a client-server […]

In computing, a good Firewall system can prevent any unauthorized access to the network security systems. Businesses and organizations invest a good amount of money in their cybersecurity infrastructure, depending on how crucial their business is. In this article, we will see the fundamentals of a new firewall service introduced in CentOS 7 named FirewallD. […]

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 by using a default TCP/IP port 22 or a custom based port number. This service is mainly used by System and Network Administrator […]

This article will help you to understand the ‘useradd’ command in Linux/Unix based systems. As we all are aware that Linux is a multi-user and a multitasking operating system (OS). It has built with a large number of commands from basic to advance. Here, we are going to see the ‘useradd’ command, it is also […]

This article will help you how to setup/configure a High-Availability (HA) cluster on Linux/Unix based systems. Cluster is nothing but a group of computers (called nodes/members) to work together to execute a task. Basically there are four types of clusters available, which are Storage Cluster, High-availability Cluster, Load-balancing Cluster, and HIGH-Performance Computing Cluster. In production, […]

This article will help you how to setup/configure iSCSI on Linux/Unix based systems. iSCSI stands for (Internet Small Computer System Interface), it is an Industry standard protocol which is mainly used to share the storage device over the TCP/IP layer. Unlike Samba or NFS which work on file system level whereas iSCSI works only on […]

Magento is one of the robust and powerful platform for eCommerce website. It built with a PHP Framework. It comes with two editions-: Magento-2 Commerce (EE) “formerly known as Enterprises Edition” and Magento-2 Open Source “formerly known as Community Edition”. Magento-2 is a fully customizable and user-friendly interface, which can set up and control a […]

This article will help to understand what is the use of df command in Linux and how to use df command with multiple options in Linux/Unix. The ‘df’ (Disk Free) command in an inbuilt utility to find the available and the disk usage space on Linux servers/storage. This command is mainly used by all the […]