Linux is the free distributed version of legendary operational system UNIX. Linux developed in 1991 by Linus Torvalds the researcher of university of Helsinki. Developed for processor Intel i386, today it is transferred on set of other hardware platforms and even on some game consoles, for example XBox. Legendary reliability of system UNIX under control of which 80 % of units in the Internet till now function, extends and on Linux in spite of the fact that the given operational system noncommercial and has the open code.

The basic components of system (depending on the concrete distribution kit and a command of the developers supporting system):

• The Kernel 2.6.11.6.
• KDE 3.3.2 with partial support of functions KDE 3.4.
• GNOME 2.8.3.
• Firefox 1.0.2, OpenOffice.org 1.1.4.
• Cdrtools 2.01

Linux demands the minimal service as its control system of the software automatically watches problems of dependence and prevents conflicts of appendices. Owing to reliability of this operational system, Linux can work as months without reload. Except for the graphic interface of installation, Linux offers more expanded and effective system of definition the equipment during installation. The graphic approach to system administration in addition to a command line does Linux by operational system which breaks representation about Linux as about system which can be administered only in a command line or in a text mode. Excellent integration of a friendly graphic environment (type KDE and GNOME) gives convenience and simplicity using.

Linux open a door in the world of open operating systems in which there is a huge quantity of means for the decision of diversified problems: multiuser mode, multitask mode, the protected mode of the processor, protection of memory process, virtual memory with the page organization, plural virtual consoles, support of all standard formats of CD-ROM and many other things. Besides OS possesses high speed, allows to use completely opportunities of modern personal computers, removing the restrictions inherent DOS and MS Windows on use of memory of the machine and resources of the processor, works reliably, steadily, is perfect without lags and is not subject to viruses.

Linux simple enough in use operational system. Difficulties does not arise as at the begining users who are not having special knowledge in IT, and at experienced users who prefer to not spend hours for installation and adjustment of the Linux machine. Especially it is useful and to professionals for whom powerful, all-round and stable systems are necessary.

Realization of high-grade systems of a virtual hosting under control of the given operational system is popular enough in the environment service of providers, owing to the stability and absence of problems after unitary thorough setup. There is an opportunity of realization on the given platform, both service of a virtual hosting, and service of the virtual allocated servers (VPS).

Every day thousand new users open Linux and find in it high-grade replacement свом to the previous operational systems. It is system with free and open-cast mining. Any person, be it the inhabitant of Washington or Ekaterinburg, can become co-author Linux, having made the contribution to development of one of the best operational systems of the world. Has no value, big or small.