Author: Rahul

Ajenti is a web-based control panel for managing systems (like Webmin, cPanel). It has a very beautiful and user-friendly interface. For personal use, Ajenti is freely available for under AGPLv3. For commercial use, you have to pay for a small amount regularly. This article will help you to install the Ajenti control panel on Ubuntu and Debian systems. This article has been tested with Debian 10 (Buster) only. Step 1 – Add Repository Ajenti provides its own repository for installing its packages. Use one of the following commands to add Ajenti apt repository based on your operating system. On Debian…

Ajenti is a web-based control panel for managing systems (like Webmin, cPanel). It has a very beautiful and user-friendly interface. For personal use, Ajenti is freely available for under AGPLv3. For commercial use, you have to pay for a small amount regularly. This article will help you to install Ajenti control panel on CentOS, Redhat, and Fedora systems. This article has been tested with CentOS 6.5 only. Step 1 – Install RPM Repositories Ajenti provides its own repository for installing its packages. We also required to install EPEL repository in our system for installing all dependencies. Below are the commands…

Opera is a popular web browser with a large number of users. It’s is a secure, fast web browser available for mobile as well as desktop systems. This browser provides an inbuild VPN for secure browsing for its users. You can directly download the Opera web browser RPM packages from its official website. Also, it can be installed using the Snap packages. This tutorial will help you to install Opera in CentOS, RedHat (RHEL), and Fedora systems. Installing Opera in Fedora/CentOS Choose one of the below methods for installing Opera Web browser on a Linux system. Method 1 – Installing…

The Android SDK is a software development kit which provides API libraries and necessary developer tools necessary for building Android application’s. Android SDK is officially provided by android developers. This article will help you for quickly configuring ADT (Android Developer Tools) Bundle for developing apps on your Linux system. ADT has all the essential SDK components with Eclipse IDE for your Android app development. ADT Bundle includes all the things we required to start application development. It including followings – Eclipse + ADT plugin Android SDK Tools Android Platform-tools The latest Android platform The latest Android system image for the…

Creating a swap partition on an Amazon Elastic Compute Cloud (EC2) instance can help improve the performance and stability of your system. A swap partition is a space on the hard drive that can be used by the operating system as virtual memory when the physical memory (RAM) is running low. In this article, we will explain how to create a swap partition on your EC2 instance. Check if your EC2 instance has a swap partition Before creating a swap partition, you should check if your EC2 instance already has one. To do this, you can run the following command…

We are assuming that you already have installed working Tomcat server in your system. If not you can visit to earlier article Install Tomcat 7 on CentOS, RHEL or Ubuntu, Debian Systems. This article can be used for Linux as well as Windows hosts both, the only thing we need to change directory path of keystore. Step 1 – Create a Keystore A Java KeyStore (JKS) is a repository of security certificates. keytool is the command line utility for creating and managing keystore. This command is available with JDK and JRE both. We just need to make sure that JDK…

Red Hat Enterprise Linux 7 has been released successfully on June 10, 2014. RHEL 7 is providing better performance and scalability. At system administrators it provides unified management tools and system-wide resource management that reduce he administrative burden. Release Notes: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.0_Release_Notes/index.html Whats New in Red Hat Enterprise Linux 7: RedHat Enterprise Linux 7 has been released with lots of major changes and migration considerations. Currently its Release Candidate version is released and we will look final release very soon. Here is some description of major changes coming in RHEL 7 than RHEL 6. This list doesn’t contain all the changes…

This article describes how to back up metadata for an individual Virtual Machines on Citrix Xen Servers. In this article, you will get step by step instructions for backing up metadata. Also at end of this article, there is a small shell script which can be used for backup metadata for all VMs running on the Xen server. 1. Backup VMs Metadata in Citrix Xenserver 1.1. Find VMs UUID Use the following command to get list of UUIDs of all vms along with other details. this UUID will be used in next steps. xe vm-list is-control-domain=false is-a-snapshot=false uuid ( RO)…

Git has released 1.9.5 version on Dec 18, 2014. Git is a free and open source distributed version control system. It is designed to handle a small to very large projects with speed and efficiency. To know more about Git 1.9.5 read Git release notes. This article will guide you to install Git 1.9.5 on CentOS/RHEL 7/6, Fedora 27,26 Systems using the source code. To learn about Git, access Git console on your browser and know about its uses. Use this tutorial for installing latest Git on your Redhat based systems. Step 1 – Install Required Packages Before compiling Git…

DKIM (DomainKeys Identified Mail) is a method of signing electronic emails using public-private key. DKIM is used by receiving mail server for identifying email, that they are sent by authorized mail servers. It also minimizes the possibility of getting emails SPAM. This tutorial will provide you a quick and easy way to set up DomainKeys with your POSTFIX running on CentOS and RHEL systems. How DKIM Works ? When we configured DKIM on sending servers. First, we generated a public/private key pair for signing outgoing messages. The public key is configured as TXT record on a domains name server, and…