Linux is the preferred operating system for production servers and critical systems. Linux has over 300 popular flavors / distributions that are being used all around the globe by users to cater their modern day computing needs. The most important choices among Linux distributions are Redhat, CentOS, Fedora, Ubuntu and Debian. Ubuntu and Debian are used by a vast majority of home / desktop users while Fedora is heaven for developers. Redhat Enterprise Linux (RHEL) and CentOS (Community Enterprise Operating System) are two popular choices for servers operating system. Which one is better? it’s a never ending debate and frankly every user has its own priorities.