1. Linux Florian Walch, 5aI, 2008-01-16

2. Agenda History Naming controversy Uses Linux distributions

3. History 1983 GNU project Richard Stallman Goal:  Create a free, UNIX-like operating system Software development, but no kernel available

4. History 1991 Linux kernel Linus Torvalds Free Often used in combination with GNU software

5. History 1996 Tux Created by Larry Ewing Mascot of the Linux kernel

6. Naming controversy Often used as synonym for Linux distribution Linux = Kernel GNU project:  Use GNU/Linux instead of Linux (e.g. Debian GNU/Linux)‏

7. Uses DESKTOPDESKTOP 2002: ~3% market share Reasons for low percentage  Monopoly of MS Windows  Necessary trainings for employees  Software not available  Games not available Usage has been increasing  Improved usability

8. Uses SERVERSERVER More widely used than on Desktop computers Examples  LAMP  Samba & LDAP  DNS  Mail server  Database server

9. Uses EMBEDDEDEMBEDDED Widely used Examples  Mobile Phone  PDA  Router  DVD recorder

10. Uses S U P E R C O M P. 2007: 85% of top 500 supercomputers use Linux Example  MareNostrum

11. Uses Other uses  Linux firewall  Microcontroller Linux  Linux-based computer cluster ...

12. Linux distributions

14. Many Linux distributions available  Differences in target group, application area, support of hardware architecture, up-to-datedness,... Desktop distributions  Ubuntu, openSUSE, Fedora,... Server distributions  Debian, Ubuntu Server,......

15. Sources http://www.wikipedia.org http://ww.distrowatch.com http://www.kde.org http://www.acmesystems.it/