Author Archive: B N Poornima

She is a Linux professional working on Linux and open source since 2003. She loves blogging, travelling, photography and music.

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How to Setup ownCloud 9.1 on Ubuntu 16.10 with Letsencrypt SSL

In today's world, cloud usage has penetrated our lives so much that we need it for everything. To name a few, cloud based nodes, data storage, operating systems etc. Even if one decides to go for cloud computing, do they really feel safe storing all their data over the internet? Has the thought of setting […]

December 27, 2016 | By in UBUNTU HOWTO
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How to Install Nextcloud 10 with Nginx on Debian 8

Nextcloud is an open source file sync and share software. It is a fork of ownCloud and finds its usage both at individual and Enterprise level. It was recently started by Frank Karlitschek who founded  the ownCloud project earlier. Nextcloud not only has all the features of ownCloud but also plans to provide new and […]

November 18, 2016 | By
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How to Upgrade Linux Kernel to Stable 4.7 on CentOS 7.x

This is an article on upgrading Linux kernel to the latest stable version (4.7.0) on CentOS 7 . Here, we will understand why we should upgrade the kernel  and different ways of doing the same. As you might know, kernel is a part of the Operating System(OS) that acts as an interface between applications and […]

August 8, 2016 | By
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How to Install and Use Arango Database on Ubuntu16.04

Arango database (ArangoDB) is a multi-model database system, meaning one that uses combination of Key-Value pairs, documents and graphs to store data. It has a flexible data model for documents and graphs. It is a general purpose database and provides all features that are needed for a modern web application. Because of the web interface […]

July 25, 2016 | By
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How to Install Roundcube Webmail on Ubuntu16.04

Roundcube is a web application which can be used to access your emails from a web browser. It is a free and open source software tool by Roundcube Webmail project. It has a clean user interface and provides many features like full support for MIME and HTML messages, multilingual capabilities (70+ languages), find-as-you-type address book, […]

June 27, 2016 | By in OPEN SOURCE TOOLS
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How to Build and Run your apps using Docker Compose

Docker compose, formerly known as Fig,  is a tool which can define and run complex applications using Docker. Basically it does the job of creating multiple containers and links between them. Using Docker Compose requires defining the environment required for your app using a Dockerfile and the services required for the app in a '.yml' […]

April 29, 2016 | By
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A Guide to Install and Use ZFS on CentOS 7

ZFS, short form of Zettabyte Filesystem is an advanced and highly scalable filesystem. It was originally developed by Sun Microsystems and is now part of the OpenZFS project. With so many filesystems available on Linux, it is quite natural to ask what is special about ZFS.  Unlike other filesystems, it is not just a filesystem […]

March 29, 2016 | By
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How to Install pagemon - A Tool to Monitor Process Memory

Recently,  Colin Ian King from Canonical has developed a new tool called 'pagemon'. It is an ncurses based interactive memory monitoring tool which allows users to browse the memory map of an active Linux process.  Page Table Entries (PTEs) are the basis for the working of this tool. Pagemon continuously scans the PTEs of a […]

January 29, 2016 | By
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How to Install / Uninstall GIMP 2.8.16 on Ubuntu 14.04 / 15.10

GIMP is the acronym for GNU Image Manipulation Program. It is a free and open source cross-platform image editor available for GNU/Linux, Mac OS X, Windows etc.  It is frequently referred to as a free alternative to  Adobe Photoshop.  It is a highly versatile tool , it can be used for various purposes like a basic drawing program, […]

December 4, 2015 | By
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How to install Android Studio on Ubuntu 15.04 / CentOS 7

With the advancement of smart phones in the recent years, Android has become one of the biggest phone platforms and all the tools required to build Android applications are also freely available. Android Studio is an Integrated Development Environment (IDE) for developing Android applications based on IntelliJ IDEA.  It is a free and open source […]

November 18, 2015 | By
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How to Install Cockpit on Linux CentOS 7

Cockpit is an easy to use server administrator for Linux based systems. It is a free software which is released under LGPL v2.1.  Its purpose is to be able to manage multiple servers in a user-friendly manner.  Unlike other tools, it does not go deep into server configuration but tries to simplify the server administration especially for […]

October 27, 2015 | By
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How Setup VMs using Gnome-Boxes

Gnome Boxes is a simple virtualisation software whose purpose is to provide an easy graphical user interface(GUI) to manage virtual machines on Linux. Using Boxes, we can access and use both local and remote virtual systems.  It is an alternative to tools like VMware, VirtualBox and Virt-manager.  However, it is targeted for basic users rather […]

October 6, 2015 | By
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How to Manage Linux Containers using LXC

Linux Containers  is a light weight virtualization technology at the operating-system level which is capable of running more than one Linux system on a Linux host. It is an alternative to other traditional hypervisors like KVM and Xen.  Compared to the full machine virtualization techniques, isolation offered in containers is less but at the same […]

September 7, 2015 | By
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How to Manage Btrfs Filesystem in Linux

Btrfs, also pronounced as 'Butter FS' or 'B-tree FS', is a copy-on-write(CoW) filesystem for Linux.  It is GPL licensed and focuses on providing features like scalability, data integrity, defragmentation and fault tolerance among others. In this article, let us learn how to install and use some of the important features of btrfs. Installation and Creation […]

August 13, 2015 | By
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