Install Virtualbox 4.3 on Ubuntu / Debian / Fedora

VirtualBox VirtualBox is a free virtualisation software for x86 based systems and is available for most of the popular OSes like linux, mac and windows. It runs on a host system and supports running other OSes as guest. It earlier belonged to Sun and now to Oracle. At the time of this post, virtualbox 4.3.2 is the latest version and was released ...

Install MariaDB on CentOS 6.4

MariaDB MariaDB is the community developed fork of Mysql and is a great alternative to it. Its free and open source and is developed by the original developers of mysql. MariaDB is much superior to mysql in terms of features. Check out the comparison between mariadb and mysql. And the best thing is, that its a drop-in replacement for mysql, which means ...

10 basic examples of linux netstat command

Netstat Netstat is a command line utility that can be used to list out all the network (socket) connections on a system. It lists out all the tcp, udp socket connections and the unix socket connections. Apart from connected sockets it can also list listening sockets that are waiting for incoming connections. So by verifying an open port 80 you can ...

Install Nginx + Php FPM + APC on CentOS 6.4

LEMP server A lemp server runs Nginx web server along with Php and Mysql or MariaDB on a Linux system. Nginx is increasing becoming popular because of its lightweight structure and ability to handle large amounts of traffic in an optimum manner. Mariadb is the replacement for mysql because mysql is not very free anymore. In this tutorial we shall be ...

How to Install and configure Apache web server on Ubuntu 13.10

Install Apache Web server A while back I updated my ubuntu to 13.10 and then the apache php installation got messed up. So I had to reinstall it quickly to continue working on my php projects. Apache is there in the ubuntu repositories so can be installed without much effort. Here is the quick command you need to fire at the terminal. $ ...

Xubuntu 13.10 review – good as always

Xubuntu 13.10 Its over a week since Xubuntu 13.10 was released which is based on Ubuntu 13.10 Saucy Salamander and I finally got time to take a look at it. If you are new to this, then know that Xubuntu is a Xfce desktop based spin/variant of Ubuntu. It is not a derivative, just the same ubuntu wrapped with the xfce ...

5 commands to check memory usage on Linux

Memory Usage On linux, there are commands for almost everything, because the gui might not be always available. When working on servers only shell access is available and everything has to be done from these commands. So today we shall be checking the commands that can be used to check memory usage on a linux system. Memory include RAM and swap. It ...

Open http port ( 80 ) in iptables on CentOS

Iptables firewall I was recently setting up a web server on centos with nginx and php. The installation of nginx was fine, but the http port of the system was not accessible from outside. This is because centOS by default has some iptables firewall rules in effect. Only the ssh port (22) was accessible and remote shell worked. So its necessary ...

Monitor disk io on linux server with iotop and cron

Iotop - Disk Input Output usage Recently my server was giving notifications of disk io activity rising above a certain threshold at regular intervals. My first guess was that some cronjob task was causing that. So I tried to check various cron tasks to find out which task or process was causing the io burst. On servers specially its always a ...

Install the Pantheon desktop on Ubuntu

Pantheon desktop environment Pantheon is a new desktop environment that comes with elementary OS. It has a mac like look and feel and has been designed very well. It looks superb specially on laptops and can give you a cool looking desktop that you want to show off. It can be installed on Ubuntu if you want to get the elementary OS ...

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