Linux ‘ls’ command examples for beginners

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The ls (list) command displays a list of files and directories. It supports several options some of them are listed in the below table along with a short description of each. In this post we will discuss 14 different examples of ls command which can be useful for beginners. Syntax of ls command : # […]


Install KVM (Kernel Based Virtual Machine) On Ubuntu Server 14.04 / 14.10

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KVM stands for Kernel Based Virtual Machine, it is a Kernel based virtualization software available in Linux like operating system. KVM is used to create and manage virtual machines and it works only if the CPU has a support of hardware Virtualization. Use the below command to check whether your system’s CPU support hardware virtualization. […]


Working with Standard Input, Output & Error in Linux

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Every process in Linux is provided with three open files( usually called file descriptor). These files are the standard input, output and error files. By default : Standard Input is the keyboard, abstracted as a file to make it easier to write shell scripts. Standard Output is the shell window or the terminal from which […]


Install & use Dropbox (cloud storage) in Ubuntu 14.04 / 14.10

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Overview : Dropbox is a container or cloud storage where end users can keep their files, important docs and personal stuff. Dropbox is developed & started by Dropbox, Inc. Dropbox offer 2GB free space to dropbox basic accounts , you can refer dropbox to your friends and by doing so you can increase this space […]


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 – 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 […]


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 […]


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 […]