Step by step guide on how to install Virtualbox 4.3 on Ubuntu, Debian and Fedora linux and derivative distros.
This tutorial shows 10 super simple examples of netstat command on linux for monitoring network connections
Quick guide on How to install and configure the Apache http web server on Ubuntu. Also configure virtual hosts to setup multiple domains
Here is a list of commands along with examples, which can be used to check memory (RAM and swap) usage on Linux system.
How to enable incoming connections on http port 80 in iptables firewall on CentOS based linux server.