Author: Rahul

I, Rahul Kumar am the founder and chief editor of TecAdmin.net. I am a Red Hat Certified Engineer (RHCE) and working as an IT professional since 2009..

KDE is an international team co-operating on development of opensource software for desktop computing. K Desktop Environment (KDE) was founded in 1996 by Matthias Ettrich. KDE community is producing an integrated set of cross-platform applications designed to run on Linux, FreeBSD, Solaris, OS X and Microsoft Windows systems. This article will help you to install KDE 4.12 on Ubuntu 12.04 system. Click here To know more about changes in KDE 4.12. Step 1: Add backports Repository First we need to add required repository in apt-get package manager to install KDE. Use following commands to add it $ sudo apt-add-repository ppa:kubuntu-ppa/backports…

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Security is the first priority for any production applications. If your site is providing payment option, then we recommend to must have an SSL certificate on your site. This article is for Node.js users, in this article we are describing SSL configuration with a node.js application. Step 1: Create Self Signed SSL For the production applications, you would required to purchase a verified SSL from certificate authorities. In this tutorial we are using a self signed ssl certificate which is enough for development applications. First create a CSR for you domain, Provide the desired values to asked questions. # cd…

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This article is for C programming learner, With this series of articles we will explain you to what is array and how they works, How they resides in memory and How to use arrays in c programming. What is an Array ? An array is a collection of similar data-type elements stored sequentially in memory. Array size is defined on the time of declaration and can’t be altered that after. All the array must have an unique name and elements of array references with an unique index number, this index number start with 0. An simple array memory allocation takes…

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In earlier articles we have provided the steps to install MongoDB on CentOS and RHEL or Ubuntu and Debian Systems. Now find this article to how to create and drop database in MongoDB. 1. Create Database in MongoDB It’s strange to listen but true that MongoDB doesn’t provide any command to create databases. Then the question is how would we create database ?. The answer is – We don’t create database in MongoDB, we just need to use database with your preferred name and need to save a single record in database to create it. List Databases – First check…

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As a System Administrator I don’t prefer to use / directory to store MySQL data files. Each time when I install MySQL for a production server, I tried to use secondary disk for storing application and database file. In that way I always change the default data directory of MySQL to secondary disk mounted on system. Mostly MySQL uses /var/lib/mysql directory as default data directory for Linux based systems. Which are going to change to another location in this article. Instruction’s to Change Default MySQL Data Directory: Follow the below steps to make all the changes. In some cases service…

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s3.exe is a standalone windows command line utility available for managing s3 buckets and EC2 environments. this file don’t required any installation. To work with this script, we just need to have installed .Net framework 2.0 or above version. As much as I know, this script has limited options but it will be helpful for you for s3 bucket tasks and managing snapshots of EBS volumes. Download s3.exe Utility To Download s3.exe file visit s3.codeplex.com and download it. After downloading this file, you can put it under C:WindowsSystem32, so we can use it from any path in system. http://s3.codeplex.com Setup…

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FTP

VsFTPd stands for Very Secure FTP Daemon. VSFTPD is the most popular ftp server. Also probably the most secure and fastest FTP server for UNIX-like systems. If you are searching an FTP server which can provide you Security, Performance and Stability then your searching is finished here, vsFTPd can be best suitable option for you. This article will help you to setup vsFTPd server on CentOS/RHEL and Fedora systems Features of vsFTPd Despite being small for purposes of speed and security, many more complicated FTP setups are achievable with vsftpd! By no means an exclusive list, vsftpd will handle: Configure…

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Mencoder is a companion program to the MPlayer media player that can be used to encode or transform any audio or video stream that MPlayer can read. See the RestrictedFormats wiki page for instructions for enabling non-free formats in MPlayer and gmplayer. For more information visit the MPlayer web site. Step 1. Install MenCoder and MPlayer CentOS/RHEL and Fedora users, make sure that you have enabled ATrpms repository in system. Let’s begin installing MPlayer & Mencoder as per your operating system. For CentOS/RHEL and Fedora: # yum install mencoder For Ubuntu and Debian: $ sudo apt-get update $ sudo apt-get…

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PHP

XCache is a fast, stable PHP opcode cacher. This relatively new opcode caching software has been developed by mOo. XCache optimizes performance caching the compiled state of PHP scripts into the RAM and uses the compiled version straight from the RAM. This may increase php execution 1-5 times faster than default installation. Read more about XCache. Step 1: Install XCache PHP Module in cPanel To install module in cPanel server, you must have root access using. Access your server using putty or other alternatives of putty with root user and run following command. # /scripts/phpextensionmgr install xcache [Sample Output on…

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The EPEL or “Extra Packages for Enterprise Linux” is an online yum repository providing high quality of commonly used software packages. These packages are developed and tested on Fedora, which is available for RHEL. The EPEL repository is available and used for the following Linux Distributions: Red Hat Enterprise Linux (RHEL) Fedora CentOS Scientific Linux Oracle Linux Download and install the epel-release package as per your system version and architecture. Basically, they provide noarch packages, which means they are architecture-independent but still EPEL providing different packages to download. So you can download it as per your choice. Method 1 -…

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