RHEL-Centos-7

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 […]

In Linux/, Unix based system comes with an inbuilt utility ‘ps’ (processes status) to check the information on the running process. 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, […]

In this article, I will show you how to use the curl command in Linux with 15 practical examples. The curl command is one of the most powerful and useful commands used by web developers /PHP programmers/ System Admins. It is mainly used to transfer data with URLs between remote to the local system. Using […]

In this article, I am going to share another popular command in Linux/Unix platform is named ‘du’ which stands for “Disk Usage”. It is a standard command used to estimate the file space usage (means, in the terminal we can find the exact amount of disk space used by directories and files). We can use […]

In Linux/Unix ‘find’ command is one of the most important and repeatedly used command for searching files and directories. It supports various arguments and options on how to find the files/directories. Even you can find files and folders via GUI in Linux it will be more friendly and easy to use, but the difficult part […]