Contrary to popular belief, Linux is not an entire operating system. It is, in fact, an integral part of many: it is a kernel. Within any modern operating system the kernel's task is to provide interfaces between the computer's hardware and the programs or services required for the system to function. Memory management, hardware abstraction and task scheduling are all common duties for any kernel.

As Linux is only a kernel, it is not functionally useful without the accompanying tools required for a full operating system to function. The Free Software Foundation's GNU operating system (pronounced 'Guh-Nu') is therefore utilised in combination with the Linux kernel, to create what can be appropriately referred-to as 'GNU/Linux', which forms the basis of almost all 'Linux' operating systems.

Proponents of GNU/Linux implementations often cite the flexibility in configuration of the Linux kernel. An operating system that allows for as few (or as many) features as the product requires, can often provide a more efficient use of resources, saving on cost. Additionally, the benefits of open-source development mean that Linux comes under constant scrutiny, review and development; often leading the way in areas of technological advancement.

Blueberry Consultants currently use the Gentoo Linux distribution: a versatile, cutting-edge GNU/Linux operating system. By tuning Gentoo installations to include only the features and software required, Blueberry's Systems Administrators are able to maintain a lean and efficient base for the numerous virtualised servers used throughout the company. Similarly, the cutting-edge nature of Gentoo Linux allows for development and experimentation on the forefront of Linux-based technologies.

Linux remains an exciting technology with which Blueberry Consultants can continue to deliver technical solutions based upon new and existing ideas.