Master Linux in 5 Days

2 Background and Introduction

2 Background and Introduction
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(Auto-generated Video Transcript)
in today's lesson you will learn what linux is where linux came from what a linux distribution is and some of the reasons that Linux is favored for certain applications and projects over other operating systems first and foremost Linux is an operating system an operating system is simply a collection of software that manages hardware resources and provides an environment where applications can run the operating system allows applications to store information send documents to printers interact with users and other things Linux is also a colonel typically when the term Linux is used it refers to the linux operating system as a whole however it can refer to just the Linux kernel as well the Linux kernel is the core or the heart of the operating system it's the layer that sits between the hardware and applications said another way it's the intermediary between software and hardware however to have a useful operating system you need other components in addition to the colonel these components can include system libraries graphical user interfaces email utilities web browsers and other programs leanest torvalds created Linux when he was a student at the University of Helsinki studying computer science and early nineteen ninety one he purchased an ibm-compatible personal computer that came with the MS dos operating system we miss wasn't satisfied with ms-dos and wanted to use a UNIX operating system like he was accustomed to at the University when he set out to obtain a copy of UNIX for his personal use he found that the least expensive UNIX he could buy was about 5,000 u.s. dollars driven by the desire to run a unix-like operating system on his personal computer he set out to create Linux leanest and over 100 developers works on linux over the next couple of years and in March of 1994 version 1 point 0 of the Linux kernel was released Linux is open source software this means that anyone can use copy study and change the software in any way they choose so long as the source code is openly shared with other to date thousands of people have made improvements to Linux and with Linux being free and open source software it has led to the rise of Linux distributions in every case the source code is free but in some cases the distribution is not free the binaries the compiled code is not free for example you have to pay a license in order to run Red Hat Enterprise Linux however Red Hat releases their source code for anyone to download again Linux is not a UNIX derivative it was written from scratch however many of the commands that are found in Linux are also found on UNIX if you have any experience on the UNIX system you're going to feel right at home on a Linux system a Linux distribution is the Linux kernel and a collection of software that together creating operating system each distribution has its own goals and areas of focus your choice of distribution will depend on what you are trying to accomplish there are distributions that are commercial these commercial Linux distributions are backed by corporations and you can buy support from them there are non-commercial linux distributions these are maintained by a community volunteers you have linux distributions that are designed for server use others that are designed for desktop use some that are focused on research and science there are others that are focused on multimedia production there are literally hundreds of Linux distributions distrowatch com is a great website to learn about all the available Linux distributions distro is short for distribution on your screen I've listed some popular Linux distributions red hat enterprise linux fedora ubuntu debian suse linux enterprise server open suse linux mint again there are hundreds of these these are just a few of the most popular Linux distributions to get an idea of exactly what's available go to distrel watch calm so what are some of the reasons you would want to run linux linux runs on many hardware platforms from dedicated networking devices to phone to personal computers and even super proprietary UNIX operating systems typically only run on their hardware from their company for example hp-ux only runs on HP servers AIX only runs on IBM servers Linux can run on HP IBM and other servers Lennox was developed on PC hardware using intel processors over time Lennox has been ported to more hardware platforms than any other operating system the small footprint of Linux allows it to run on older hardware or on embedded systems also Lennox is known for being stable reliable and secure this makes it a great choice for servers that need to continuously run without downtime Linux has traditionally been used for server applications Linux can be used to host website act as file servers and even run database software Linux doesn't have to be used as a server though I find Linux to be a good everyday operating system that i use on my personal desktop as a matter of fact I'm recording this course with software that is running on linux linux is free not only as a source code freely available but you can run linux on your hardware without having to pay a licensing fee in many cases however if your business depends on servers that are running linux having a commercial linux distribution which you pay for and having someone that can provide support can be well worth your while linux is typically not as costly as the proprietary unix operating systems linux is also free in the sense that you can use it for any purpose and you can modify it to fit your needs if you so desire there are also many free software applications that run on Linux many of these free applications were written specifically with Lennox in mind let's recap what we've gone over in this lesson first we learned that Linux is an operating system when someone says the word Linux without a qualifier more than likely they are talking about the entire operating system however Linux is also a kernel when people speak of the Linux kernel they are typically specific and say the Linux kernel Linux being the operating system is the intermediary between hardware and we're linux distributions are implementations of Linux each Linux distribution has a different goal in a slightly different focus your choice of distribution will be driven by the goal you are trying to accomplish

 

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In this lesson you will learn:
What Linux is
Brief history of Linux
What a Linux Distribution is
Reasons Linux is used


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