Linux Operating System

Operating System?
Unix is an operating system that runs on many variants of computers from mainframe to personal computers to pop machines. The operating system is the logical layer between the physical hardware (like your AMD Athlon processor) and the software to be used (like your web browser). Although most computer users are familiar with the Microsoft operating systems (like Win3.11, Win9x, WinNT, Windows2000, WindowsXP) there are many more options out there. In fact, most true "power users" find the Microsoft line of products to be to watered-down and weak for their tastes. The Windows line of products only runs on certain hardware, is not very compatible (what is POSIX anyway ?)and it costs mucho dinero. Many other operating systems exist like Palm OS, IBM's OS2/Warp, Minix, Solaris, FreeDOS and BeOS exist, but have not penetrated the markets. Each one of these operating systems has its place to be used. Every SysAdmin, Network Manager, programmer or plain techno-phile should become familiar with several so you know what to use where.

Defining Open Source
One of the greatest strengths of Linux is that it is Open Source. Understanding software models will help you determine what software you should use. Open source does NOT translate to "free". Did you ever hear of the urban legend of the Cookie Recipe? In this example there are two products: 1. Cookie and 2. Recipe. Open source (eg Linux) says that when you buy the cookies, we give you the recipe as well at no extra charge. Closed-source (eg. Microsoft) says we will sell you a cookie that will go stale in 3 days and you are not allowed to figure out what we put in it. (even if it is to prevent it from going stale). There are also Freeware products. In Freeware, you are given the cookies, but not the recipe. The following table sums this up.

Software ModelProductSource AvailableExample
Closed Source$$$$$NOMicrosoft Office
Open Source$$$$$YESStarOffice

In the beginning...
Swedish Linus Benedict Torvalds studied at the University of Helsinki in Finland. While studying, he also worked as a research assistant. In this capacity, the University encouraged him to work on his pet project. This project was to write an OS as an alternative to Minix. Some parts were borrowed from MIT in Bean-Town, FSF and Berkeley in California. The resulting software falls under the GNU public license agreement and is freely distributable with its source code. In September of 1991 the first prototype rolled out to the Internet and BBS systems. It was very limited in what it could do, but it ran nonetheless. Since then thousands of developers have worked around the world on adapting and molding Linux and Linux tools.

And now...
Linux is a very stable and scalable platform to run on. It will run on an old 386 desktop or scale up to the over 10,000 nodes in a network cluster providing more power than Cray supercomputers. It has been used by Google to host the largest search engine in the world, run video editing workstations for movies such as Titanic and Shrek, as well as run many stable websites.

The United States government (specifically the NSA) has worked on developing a secure Linux.

Linux Training at Domain Logic will teach you how to properly integrate Linux into your existing networked environment in the most effective manner. You can attend regularly scheduled seminars at our facilities in Indiana (Goshen, South Bend, or Elkhart) or have us bring the training to your facilities.

What you will Learn...
In our real-world lab environment, you will get a hands-on experience in setting up Linux as a desktop operating system and as dedicated servers. Learn how to replace those costly Cisco routers with a more robust Linux firewall solution. Build a comprehensive web server that generates dynamic content with connectivity to your databases. We will teach you how to build a a more powerful email server with spam filtering and virus protection..all with FREE software.

As with most of the courses at Domain Logic, we don't send you on your way without giving you the tools to do your job. Copies of all Linux Operating systems and tools used in-class will be packed along with a Certificate of Achievement to take home with you.

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Netcraft Want to know who is running Linux servers? This will show you who runs Linux Servers and how long each computer has been running without a reboot. (you can also check Solaris, Windows and other Operating systems).

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