How to install Docker on CentOS 7

Docker is an open-source tool that makes creating & managing Linux containers(LXC) easy. Containers are like lightweight VMs which can be started & stopped in milliseconds. Dockers help the system admin & coders to develop their application in a container and can further scale up … Read more


Monitor and Analyze Hard Drive Health with Smartctl in Linux

Smartctl (Self-Monitoring, Analysis and Reporting Technology) is a command line utility or a tool in UNIX and Linux like operating system that perform SMART tasks such as printing the SMART self-test and error logs, enabling and disabling SMART automatic testing, and initiating device self-tests. Smartctl … Read more


How to Enable EPEL Repository in CentOS and RHEL

EPEL stands for ‘Extra Packages for Enterprise Linux‘ , as the name suggest epel provides additional rpm packages for RHEL, CentOS, Scientific Linux (SL) & Oracle Enterprise Linux (OLE). EPEL is created and maintained by Fedora community and EPEL packages are 100% free/libre open source … Read more


How to Use Conditional Statements in Bash Script

In this guide, we will learn how to use conditional statements like if, if-else, If-elif-else, netsted if and case in the bash script. Conditional statements plays an important role in bash script as it helps to take decision based on the condition. In a bash … Read more


SUSE Linux – Zypper Command Examples

Zypper is command line interface in SuSE Linux which is used to  install, update, remove software, manage repositories, perform various queries, and lot more. In this article we will discuss different examples of zypper command . Syntax : # zypper [–global-opts] <command> [–command-opts] [command-arguments] The … Read more


How to Install MariaDB in Ubuntu 20.04 LTS

MariaDB is an Open Source database Server and It is 100 % compatible  with MySQL and consider as drop-in replacement to MySQL database server. Background of MariaDB In 2008, MySQL was acquired by Sun Microsystems, which was in turn acquired by Oracle Corporation in 2010. … Read more


12 Useful Wget Command Examples in Linux

Wget command in Linux is used to download files from the web using HTTP, HTTPS, and FTP protocols.  In other words we can say that wget is non-interactive command line downloader tool for Linux systems. It also supports downloading files through HTTP proxies. Here non-interactive … Read more

How to run Linux Commands within vi/vim editor

There are some scenarios where UNIX or Linux admin wants to run linux commands and insert the output of commands in vi editor without leaving it. This can be possible using below steps : First Go to command mode in vi editor by pressing ‘esc‘ … Read more


11 Xargs Command Examples in Linux

xargs is a command in UNIX like System that reads items from the standard input, delimited by blanks (which can be protected with double or single quotes or a backslash) or newlines, and executes the command (default is /bin/echo) one or more times with any … Read more

20 Linux Virtualization Interview Questions and Answers

Q:1 What is Virtualization ? Ans: Virtualization is a technique for creating virtual resources (rather than the actual) such as server, storage device, network  and Operating system. Virtualization is dis-associating the tight bond between software and hardware. Q:2 What are the different types of  Virtualization … Read more