docker

How to install Docker on CentOS 7

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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 to 1000 of nodes. The main difference between container and […]

smartctl

Smartctl – Monitoring & Analysis tool for Hard drive

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Smartctl (Self-Monitoring, Analysis and Reporting Technology) is a command line utility or a tool in UNIX 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 is useful on physical Linux servers where smart disks can be checked […]

virtualbox

Install VirtualBox in Ubuntu 14.04 LTS & 14.10

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VirtualBox (Oracle VM VirtualBox) is a virtualization software for x86 & AMD64 / Intel based system from Oracle. Virtualbox allows us to run multiple operating system at the same time . We can say VirtualBox is very powerful and cross-platform virtualization software. In this Post we will discuss how to install Virtualbox in Ubuntu 14.04 […]

list-epel-packages

Enable EPEL repository in CentOS & RHEL

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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 software (FLOSS). In this post we will […]

Shell Scripting – Checking Conditions with if

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In Bourne Shell if statement checks whether a condition is true or not. If so , the shell executes the block of code associated with the if statement. If the statement is not true , the shell jumps beyond the end of the if statement block & Continues on. Syntax of if Statement : if […]

Screen-after-login

SUSE Linux – Zypper Command Examples

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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 components mentioned in brackets are not required. The simplest way […]

mariadb

How to Install MariaDB in Ubuntu 14.04 LTS

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MariaDB is an Open Source database Server & It is 100 % compatible¬† with MySQL, 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. While the initial acquisition by Sun was hailed by many in the […]

17 Squid Proxy Server Interview Questions & Answers

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Q:1 What is Proxy Server and why it is used ? Ans: A proxy server provides Internet access to different users at same time i.e by sharing a single Internet connection. A good proxy server also provides for caching of the requests, which helps to access data from local resources rather fetching the data from […]