Linux is a free and open-source operating system based on the Linux kernel. It was created by Linus Torvalds in 1991 and has since matured and developed further under itself. Linux can be used on desktops, servers, mainframes, supercomputers, and in devices like Android. It offers advantages like power, stability, low hardware requirements, and free availability from multiple vendors. Popular Linux distributions include Red Hat Enterprise Linux, Fedora, Debian, SUSE Enterprise Linux, and Ubuntu.

1. LinuxPresented by:Josh TulloLinda LuongWebpage: https://sites.google.com/site/bus119alinux/Last updated: September 26,2011

2. What is Linux?Background and Brief HistoryWhy choose Linux?UsesKDE and GNOMELinux and UnixPopular Linux ApplicationsConclusion Table of Contents

3. Linux is a computer operating system based on free and open source software.There are many different varieties of LinuxLinux is Unix-Like and based on the “Linux” KernelHas the X Windows GUIRuns on multiple platformsIncludes the Source CodeWhat is Linux?

4. Linux was created in 1991 by LinusTorvaldsTorvalds began to develop the Linux kernel on Minix Later Linux matured and began to develop under itselfIn 1992, Torvalds released his notes for version .12 and published version 0.99Brief History and Background

5. 1998: Many major companies such as IBM, Compaq and Oracle announce their support for Linux. By 2005, the use of Linux became more prevalent in Supercomputing.2011: Version 3.0 of the Linux kernel is released.Brief History and Background

6. Linux is PowerfulIt runs on multiple hardware platformsIts fast and stableDoes not require latest hardwareLinux is “Free”There are multiple vendors who distribute the Linux SoftwareWhy choose Linux?

7. DesktopServersMainframesSupercomputersAndroidAndroid is based on a modified version of LinuxFirewalls and ServersCisco/LinksysUses

8. Both KDE and Gnome are just big packages with software aimed to look and feel the same way, work well together and generally give the user a nice experienceLinux can either be used with a KDE or Gnome desktop environmentDesktop EnvironmentsKDE and GNOME

9. GNOME Desktop

10. KDE Desktop

11. UNIX is copyrighted name only big companies are allowed to use the UNIX copyright and name, so IBM AIX and Sun Solaris and HP-UX all are UNIX operating systems. Linux is just a clone of UNIX Linux and Unix

12. Difference Characteristics Between Linux & UNIXLinux comes with open source netfilter/iptables based firewall tool to protect your server and desktop from the hackers. UNIX operating systems comes with its own firewall product Linux and Unix

13. Common Characteristics Between Linux & UNIXBoth share many common applications such as:GUI, file, and windows managers (KDE, Gnome) Shells (ksh, csh, bash) Development tools (perl, php, python, GNU c/c++ compilers) Posix interface Linux and Unix

14. UNIX Operating System NamesA few popular names:HP-UX IBM AIX Sun SolairsMac OS’sIRIX Linux Distribution (Operating System) NamesA few popular names:Redhat Enterprise Linux Fedora Linux Debian Linux Suse Enterprise Linux Ubuntu Linux Linux and Unix

15. Emulators Mac-On-LinuxWin4LinWineMultimediaKplayer - KDELAMELiVESRealPlayer for LinuxVLCPopular Linux Applications

16. OfficeGnumeric - GNOMEKoffice – KDE Open OfficeBrowsersFirefoxKonquerer - KDEOperaPopular Linux Applications

17. We've uncovered all the essential aspects of the Linux operating system, and we hope you've now got a much better understanding of how it all hangs together. One of the best things about Linux is that you're free to experiment and change things freely. It’s Not the Endhttps://sites.google.com/site/bus119alinux/

18. What is Linux?Background and Brief HistoryWhy choose Linux?UsesKDE and GNOMELinux and UnixPopular Linux ApplicationsConclusion Table of Contents