The term "Linux" generally refers to a complete operating system that is a combination of the Linux kernel and GNU software. Various Linux distributions became widely available by the mid-1990s. Popular distributions include Red Hat/CentOS/Scientific Linux, Fedora, SuSE/OpenSUSE, Debian and Ubuntu.
Linux distributions differ by:
The following table discusses the main differences between the Red Hat and CentOS distributions.
|Red Hat Enterprise Linux is a commercial Linux distribution intended for servers and workstations||CentOS is essentially a clone of Red Hat Enterprise Linux, with the proprietary Red Hat components removed|
|Red Hat requires purchasing a license and registering the product to receive support and updates||CentOS does not require purchasing a license for unrestricted access to updates|
|Red Hat is developed, maintained, and supported by Red Hat for its subscribers||CentOS is developed, maintained, and supported by its users and contributors|