Wikipedia:WikiProject Linux/Translatation:Geschichte von Linux

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Linux is a free kernel for computer operating systems. It has made much progress since its inception. Besides its growth from a small number of C files to currently consisting of about 40MB of course code, it has been put under a free license and seen various controversies about the use of its name.

This article gives a detailed overview of the history of Linux. A more general overview about Linux can be found in the main article, Linux.

Contents 1 Historical developments 1.1 Previous developments 1.2 Emergence of Linux 1.3 The name Linux 1.4 Linux under the GPL 1.5 GNU/Linux 1.6 The mascot 2 Recent developments 2.1 Kernel 2.2 Desktop 2.3 Community 2.4 Open Source Development Labs 2.5 Companies 3 Controversies 3.1 Andrew Tanenbaum 3.1.1 "Linux is obsolete" 3.1.2 Das Buch Samizdat 3.2 Competition from Microsoft 3.3 SCO 3.4 Trademark rights 4 Timeline 5 References 6 See also 7 Further reading 8 External links

[edit] Historical developments

[edit] Previous developments

In 1983 Richard Stallman started the GNU project with the goal of creating a free UNIX-like, POSIX-compatible operating system. Two years later he created the Free software Foundation (FSF) and developed the GNU general Public License (GPL), in order to spread software freely. In this way the GNU software developed very fast and by many people was developed further. Within a short time a multiplicity of programs developed so, by the early 1990s there was almost enough already available GNU software in order to create its own operating system. However a Kernel was still missing. This was to be developed in the GNU Hurd project but, Hurd proved to develop very sluggishly because finding and repairing errors (debugging) was very difficult and laborious due to technical characteristics of the microkernel design. Another project concerned with a free operating system in the 1980s was the Berkeley Software Distribution (BSD). This was developed by Berkeley university from the 6th edition of Unix from AT&T. However since AT&T Unix code was contained in BSD, AT&T filed a lawsuit in the early 1990s against the University of Berkeley, which strongly limited the development of BSD and greatly slowed development. Thus the early 1990s gave it no complete, free system. The future of BSD was uncertain because of the litigation, development stalled, and although the GNU project was gradually developing, it lacked a well-behaved UNIX Kernel. In fact, it was more of a loose collection of free software projects, which could be translated on the most diverse (commercial) UNIX variants by means of the GNU compiler and were executable.

[edit] Emergence of Linux

Linus Torvalds began the development of Linux in 1991 in Helsinki. It was initially a terminal emulation, which Torvalds used to access the large UNIX servers of the university. He wrote the program specifically for the hardware he was using and independent of an operating system because he wanted to use the functions of his new PC with a 80386 processor. This is still among the standard today, optimally. The operating system he used during development was Minix, and the initial compiler was the GNU C compiler, which is still the main choice for compiling Linux today (although Linux will compile under other compilers, such as the Intel C Compiler).

As Torvalds wrote in his book Just for Fun, he eventually realised that he had written an operating system.^[1] On August 25th, 1991, he announced this system via a Usenet posting to the group comp.os.minix. This posting may rank among the most well-known postings on the Usenet:

"Hello everybody out there using minix -

I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones. This has been brewing since april, and is starting to get ready. I'd like any feedback on things people like/dislike in minix, as my OS resembles it somewhat (same physical layout of the file-system (due to practical reasons) among other things).

I've currently ported bash(1.08) and gcc(1.40), and things seem to work. This implies that I'll get something practical within a few months, and I'd like to know what features most people would want. Any suggestions are welcome, but I won't promise I'll implement them :-)

Linus (torvalds@kruuna.helsinki.fi)

PS. Yes – it's free of any minix code, and it has a multi-threaded fs. It is NOT portable (uses 386 task switching etc), and it probably never will support anything other than AT-harddisks, as that's all I have :-(." ^[2]

[edit] The name Linux

Linus Torvalds wished Linux to be called Freax, created from the words "Freak" and "Free" for free software and the usual "x " in an allusion to the similarity to Unix. For the first six months at the beginning of his work on the system he put the files under the Freax name. Torvalds had already considered the name Linux but it seemed too egotistical to him. In order to give other people the ability to collaborate about the system and to suggest improvements in September of 1991 the files were put up on the ftp server (ftp.funet.fi) of the Helsinki University OF Technology (HAT). The person responsible for the server at that time, Ari Lemmke (coworker at the HAT), preferred the name Linux. Without discussing the name with Torvalds, he simply called the selection at the server Linux, which was finally accepted by Torvalds after long discussions and also Torvalds admits, because Linux was simply the better name. In the source code of version 0.01 of Linux the name Freax still appears ("Makefile for the FREAX kernel") and only later was the name Linux used. Though it wasn't the original plan, the name Linux became used world-wide.

[edit] Linux under the GPL

Torvalds first published Linux under its own license. However, he later decided to use the GNU copyleft lisence. The first version under GNU copyleft was version 0.12 published in January 1992 and the change of license was noted in the CHANGE log [2]. In the middle of December 1992 he published version 0.99 containing the text of the GPL [3] for the first time. ^[3].

This licensing decision was the step that made it possible to develop Linux quickly and efficiently with the help of several other developers from around the world. Thus a growing community of developers created a kernel that was state of the art and competitive with proprietary systems.

Later Linus Torvalds said in an interview that the decision to place Linux under the GPL was his best ever: "Making Linux GPL'd was definitely the best thing I ever did." ^[4].

[edit] GNU/Linux

The term Linux was initially used by Torvalds only for the kernel, the core of the operating system but, over the course of time the name generally became accepted in addition, for most Linux distributions, which also contain a lot of other programs besides the Linux Kernel. Many of these programs come from the GNU project. For this reason Richard Stallman of the Free software Foundation has tried for years to change the name of the operating systems that contain Linux as the kernel to GNU/Linux [4].

It should be be pointed out that the system only became possible by the efforts of the GNU project to create a completely free operating system, while Linux is actually only an indispensable, but small component of the overall system. However this opinion is disputed since a typical Linux distribution also contains many programs that do not come from the GNU project.

The arguments over using a combined name including both GNU and Linux started soon after Linux' release to the public. The GNU's Bulletin noted Linux in 1994 as a "free Unix clone", the same year that Debian adopted the name GNU/Linux for their distribution. In der Januarausgabe 1995 des GNU's Bulletin änderten sich die Verweise auf Linux zu GNU/Linux. Im Mai 1996 gab Richard Stallman den Editor Emacs 19.31 heraus, in dem der Systemtyp von Linux nach Lignux umbenannt wurde. Er meinte, es wäre angemessen, die Begriffe Linux-based GNU system, GNU/Linux system oder Lignux zu benutzen, um auf die Kombination von Linux-Kernel und GNU-Software hinzuweisen. Er gab jedoch bald den Ausdruck Lignux auf und benutzte nur noch GNU/Linux.

The continuous requests to name the system GNU/Linux encountered different reactions. Only a few distributions did not follow the example of Debian, the large commercial Linux Distribution followed. Some of the users and developers of free software as well as the open SOURCE movement followed the requests, most however ignored or opposed it, even under protest. A reason for not using the term GNU/Linux is surely that Linux is clearly simpler, the best term is simple. A further possibility is that Linus Torvalds had always called the combined system "Linux" since its publication in 1991. Stallman ,however, announced his demand to change the name only after the system had already became popular.

See also: GNU/Linux naming controversy and Linux (Begriffsklärung)

[edit] The mascot

Torvalds announced in 1996 that there would be a mascot for Linux, a penguin. The conditions imposed as described in the biography Just for Fun were:

ORIGINAL QUOTE FROM BOOK NEEDED HERE - TRANSLATING BACK INTO ENGLISH WON'T DO

„Aber Linus wollte keinen x-beliebigen Pinguin. Sein Pinguin sollte glücklich aussehen, so als hätte er grade eine Maß Bier genossen und den besten Sex seines Lebens gehabt.“ (Lit.: Torvalds, S. 151) Larry Ewing provided thereupon the original draft of the today's well known mascot. The name Tux was suggested by James Hughes as derivative of T orvalds's U ni X . A further reason for this construction is probably that due to its colours, the penguin seems to be wearing a tuxedo.^[1]

[edit] Recent developments

[edit] Kernel

Als Linux-Kernel-Betreuer sind neben Torvalds auch Alan Cox und Marcelo Tosatti sehr bekannt. Cox betreute bis Ende 2003 die Kernel-Reihe 2.2, Tosatti kümmerte sich bis Mitte 2006 um die Version 2.4 und Andrew Morton steuert die Entwicklung und Verwaltung des neuen 2.6-Kernels, welcher am 18. Dezember 2003 in einer als stabil (stable) vorliegenden Version veröffentlicht wurde. Auch die älteren Zweige werden nach wie vor ständig verbessert.

Der Erfolg von Linux in vielen Einsatzbereichen ist insbesondere auf die Eigenschaften freier Software bezüglich Stabilität, Sicherheit, Erweiterbarkeit und Wartbarkeit, aber auch auf die entfallenden Lizenzkosten zurückzuführen.

[edit] Desktop

With graphical user environments such as KDE and GNOME Linux offers to the graphic in Bereich the Desktops meanwhile are a comparable in comfort too MS Windows or Mac OS X. Extensive tests of the environments on user friendliness and efficiency make possible the use of Linux without special knowledge. Techniques as Xgl or AIGLX make possible for hardware acceleration and graphical effects on the Desktop.

Neben dem wachsenden Angebot proprietärer Software für Linux hat vor allen Dingen die Community das Softwareangebot für Linux stetig vergrößert und in unterschiedlichste Bereiche ausgedehnt: Mit der Zeit sind immer mehr Freie Softwareprojekte entstanden, die von Entwicklungsumgebungen über Businessanwendungen bis hin zu komplexen Multimediaanwendungen reichen. Die Windows-API-Nachbildung Wine erlaubt es außerdem, mit einer stetig steigenden Anzahl von für Windows geschriebenen Programmen auch unter Linux zu arbeiten.

Die auf den Desktop ausgelegten Distributionen lassen sich einfach installieren, es werden aber auch zunehmend Komplettrechner mit vorinstalliertem Linux ausgeliefert, was der Verbreitung als Einzelplatzsystem Vorschub leistet. Im Bereich mit Masseninstallationen wie in Firmen oder Behörden hat Linux durch groß angelegte Migrationen z. B. in München oder Wien von sich reden gemacht. Der Erfolg eines Desktopsystems wird aber auch durch die Verbreitung von Spielen entschieden. Einige neue Spiele der großen Spielehersteller kommen auch in Linuxversionen heraus, so stehen z. B. auch id Softwares grafiklastige Spiele Doom 3, Quake 4 sowie die Teile 1 bis 3 der Quake-Reihe für Linux zur Verfügung.

[edit] Community

Der größte Teil der Arbeit an und um Linux wird durch die Community, also durch freiwillige Mitarbeiter auf der ganzen Welt, erledigt. Diese teilweise auch von Firmen unterstützten oder direkt angestellten Programmierer und Entwickler helfen nicht nur direkt bei der Entwicklung des Kernels, sondern auch beim Schreiben der gesamten Zusatzsoftware, die für und rund um Linux zur Verfügung steht.

Dabei gibt es sowohl die vollständig frei und selbstorganisierten Projekte wie Debian, aber auch die mit Firmen direkt verbundenen Projekte wie Fedora Core und openSUSE. Die Mitglieder der jeweiligen Projekte treffen bei verschiedenen Konferenzen und Messen zusammen, um sich auszutauschen. Eine der größten Messen ist dabei der LinuxTag in Karlsruhe (ab 2006 in Wiesbaden), bei dem jährlich mehr als 10.000 Menschen zusammen kommen, um sich über Linux und die darum angesiedelten Projekte zu informieren und auszutauschen.

[edit] Open Source Development Labs

The Open Source Development Labs (OSDL) were founed in 2000 and are an independent non-profit organisation that aims to optimise Linux for deployment in data centres and with carriers (?). It serves as a sponsored workplace for Linus Torvalds and did for Andrew Morton prior to his move to Google. The OSDL allows Torvalds to oversee the development of Linux full time. The OSDL is financed by firms such as Red Hat, Novell, Mitsubishi, Intel, IBM, Dell and HP.

[edit] Companies

Currently a group of companies makes money with Linux. These companies, most of which are also members of Open Source development Labs, invest substantial resources to the advancement and development of Linux in order to make it suited for different areas of application. Dies reicht von Hardwarespenden an Entwickler über Treiber und Geldspenden für Stiftungen, die sich mit Linux-Software beschäftigen, bis hin zur Anstellung von Programmierern bei der Firma selbst. Bekannte Beispiele dafür sind IBM und HP, die Linux vor allen Dingen auf den eigenen Servern einsetzen, als auch Red Hat, das eine eigene Distribution unterhält. Ebenso unterstützt Trolltech Linux durch die Entwicklung und der GPL-Lizenzierung von Qt, was die Entwicklung von KDE erst möglich macht, und durch die Förderung einiger X- und KDE-Entwickler.

[edit] Controversies

Linux has been surrounded by controversy repeatedly since its inception.

[edit] Andrew Tanenbaum

[edit] "Linux is obsolete"

1992 kam es durch einen Usenet-Artikel Andrew S. Tanenbaums in der Newsgroup comp.os.minix mit dem Titel Linux is obsolete zu einer berühmt gewordenen Debatte um die Struktur des Linux-Kernels, in dem der anerkannte Informatiker und Autor des Microkernel Systems Minix Tanenbaum eine ganze Reihe von Kritikpunkten an dem damals noch recht jungen Linux-Projekt anbrachte. Most important, his criticisms were:

• The design of the kernel was monolithic and old-fashioned.
• The lack of portability due to the use of features of the Intel 386 processor was poor design in Tanenbaum's eyes. "Writing a new operating system that is closely tied to any particular piece of hardware, especially a weird one like the Intel line, is basically wrong."
• The open distribution and development model of the software lacked strict control of the source code by any individual person.
• The operating system installed a set of features which were useless from Tanenbaum's point of view. (he judged the file system, one that permitted parallel access from several programs, as a redundant "performance chop").^[5]

Tanenbaum's prediction that Linux would become outdated within a few years and replaced by GNU Hurd (which he considered to be more modern) was incorrect. Linux has been ported to all of the major platforms and its open development model has led to an exemplary pace of development. Additionally, GNU Hurd has not yet reached the level of stability that would allow it to be used on a production server.^{[citation needed]}

[edit] Das Buch Samizdat

Jahre später wurde Andrew Tanenbaum erneut mit Linux in Verbindung gebracht. Als Ken Brown sein bis heute nicht erschienenes Buch Samizdat schrieb und deshalb mit Tanenbaum sprach, erklärte dieser, Torvalds habe nicht von ihm abgeschrieben. In seiner Stellungnahme zu Brown schrieb er einen Abschnitt, der sein Verhältnis zu Linux gut dokumentiert: Natürlich habe Torvalds sein Buch und Minix gekannt.

„But the code was his. The proof of this is that he messed the design up. MINIX is a nice, modular microkernel system [...] Linus rewrote the whole thing as a big monolithic kernel, complete with inline assembly code :-(. The first version of Linux was like a time machine. It went back to a system worse than what he already had on his desk. Of course, he was just a kid and didn't know better (although if he had paid better attention in class he should have), but producing a system that was fundamentally different from the base he started with seems pretty good proof that it was a redesign. I don't think he could have copied UNIX because he didn't have access to the UNIX source code, except maybe John Lions' book, which is about an earlier version of UNIX that does not resemble Linux so much.“ ^[6]

[edit] Competition from Microsoft

Although Torvalds has said that Microsoft's feeling threatened by Linux in the past was of no consequence to him, ACTUAL QUOTE WOULD BE NICE HERE the Microsoft and Linux camps had a number of antagonistic interactions between 1997 and 2001. This became quite clear for the first time in 1998, when the first Halloween document was brought to light by Eric S. Raymond. This was a short essay by from a Microsoft developer that sought to lay out the threats posed to Microsoft by Free Software, and identified strategies to counter these perceived threats.

Competition entered a new phase in the beginning of 2004, when Microsoft published results from customer case studies evaluating the use of Windows vs. Linux under the name "GET the Facts" on its own web page. Based on inquiries, research analysts, and some Microsoft sponsored investigations, the case studies claimed that enterprise use of Linux on servers compared unfavourably to the use of Windows in terms of reliability, security, and total cost of ownership.^[7]

The commercial Linux distributors put effort into producing their own studies, questionnaires and testimonials to counter Microsoft's campaign. Novell's web-based campaign at the end of 2004 was entitled "Unbending the truth", and sought to outline the advantages as well as dispelling the widely publicised legal liabilities of Linux deployment. Novell particularly referenced the Microsoft studies in many points. IBM also published a series of studies under the title "The Linux at IBM competitive advantage" to again parry Microsoft's campaign. Red Hat had a campaign called "Truth Happens" that aimed not to advertise the product on the basis of studies, but to let the performance of the product speak for itself.

Die meisten Mitglieder der Linux-Community nehmen die Thematik aber gelassen und sticheln mit Witzen wie „Linux – und dein PC macht nie wieder blau oder „Früher oder später migrieren wir euch“. Unter anderem veröffentlichte auch das Magazin LinuxUser ein nicht ganz ernst gemeintes Review von Windows XP unter den Kritikpunkten einer typischen Linux-Distribution.

[edit] SCO

Main article: SCO-Linux controversies

In March 2003 SCO accused IBM of violating their copyright on UNIX by transferring code from UNIX to Linux. SCO claims ownership of the copyrights on UNIX and a lawsuit was filed against IBM. Red hat has countersued and SCO has since filed other related lawsuits. At the same time SCO sold Linux licenses since the beginning of this to users who do not want to risk a possible complaint on the part of SCO. Aber auch das Urheberrecht rund um UNIX ist nicht geklärt: Da Novell dieses ebenfalls für sich beansprucht, eröffnete es ein Verfahren gegen SCO.

[edit] Trademark rights

In 1994 and 1995 several people in different countries attempted to register the name Linux as a trademark. Thereupon requests for royalty payments were issued to several Linux companies, a step with which many developers and users of Linux did not agree. Linus Torvalds clamped down on these companies with help from Linux International and was granted the trademark Linux, which he transferred to Linux International. Protection of the trademark was later administered by a dedicated foundation, the non-profit Linux Mark Institute. In 2000 Linus Torvalds specified the basic rules for the assignment of the licenses. This means that everyone who offers a product or a service with the name Linux must possess a license for it, which can be attained through a unique purchase. Ausnahmen bilden dabei nicht-kommerzielle Verwendungen, die eine kostenlose Lizenz erhalten können oder keine benötigen.

In June 2005 a new controversy developed over the use of royalties generated from the use of the Linux trademark. The Linux Mark Institute, which represents Linus Torvald's rights, announced a price increase to 5,000 dollars from 500 dollars for the use of the name. This step was was justified as being taken to cover the rising costs of the protection of the trademark.

In der Community sorgte diese Erhöhung für Unmut und Missverständnisse, weshalb sich Linus Torvalds am 21. August 2005 selbst zu der Thematik zu Wort meldete, um die Wogen zu glätten und die Missverständnisse aufzulösen. In an e-mail he described the current situation as well as the background in detail and also dealt with the question of who had to pay license costs:

"[...] And let’s repeat: somebody who doesn’t want to _protect_ that name would never do this. You can call anything "MyLinux", but the downside is that you may have somebody else who _did_ protect himself come along and send you a cease-and-desist letter. Or, if the name ends up showing up in a trademark search that LMI needs to do every once in a while just to protect the trademark (another legal requirement for trademarks), LMI itself might have to send you a cease-and-desist-or-sublicense it letter."

"At which point you either rename it to something else, or you sublicense it. See? It’s all about whether _you_ need the protection or not, not about whether LMI wants the money or not."

"[...] Finally, just to make it clear: not only do I not get a cent of the trademark money, but even LMI (who actually administers the mark) has so far historically always lost money on it. That’s not a way to sustain a trademark, so they’re trying to at least become self-sufficient, but so far I can tell that lawyers fees to _give_ that protection that commercial companies want have been higher than the license fees. Even pro bono lawyers charge for the time of their costs and paralegals etc." ^[8]

[edit] Timeline

• 1991: Linux wird am 25. August von dem 21-jährigen finnischen Studenten Linus Benedict Torvalds öffentlich im Usenet angekündigt. Am 17. September folgt die erste öffentliche Version auf einem FTP-Server. Einige Entwickler interessieren sich für das Projekt und steuern Verbesserungen und Erweiterungen bei.

• 1992: The first Linux distributions appear.

• 1993: Already, over 100 developers are working on Linux. The kernel is being adapted to the GNU operating system, laying it open to a wide range of real-life applications. Version 0.99.10 is the first licensed under the GPL. The WINE project takes up work. The oldest surviving Linux distribution, Slackware, is released for the first time, and the largest community distribution, the Debian project, is founded.

• 1994: It's not until March of this year that Torvalds considers all kernel components as mature, and releases version 1.0. The kernel is now net-enabled (see IP stack). The XFree86 project contributes a graphical user interface. Red Hat and SuSE each release version  1.0 of their distribution.

• 1995: The next stable branch appears in March of this year – the 1.2 series. During the course of the year, Linux is ported to the DEC and Sun SPARC processor architectures. This porting to further new platforms will continue during the following years.

• 1996: Version 2.0 is published. The kernel can now use more than one CPU simultaneously, making it attractive for productive use in a range of new areas.

• 1997: Several commercial programs for Linux enter the market, among them the database Adabas D, the Netscape browser and the office suites Applixware and StarOffice.

• 1998: Firms such as IBM, Compaq and Oracle announce their support for Linux. A new group of programmers starts developing the graphical user interface K Desktop Environment (KDE), the first aiming for user friendliness for the general user.

• 1999: The 2.2 series comes out in January, with better networking code and improved support of symmetric multiprocessing. At the same time another group of developers starts the GNOME project due to a belief that KDE, using a proprietary widget set, is not free. The aim of the GNOME project is to develop a free set of graphical widgets and produce a user-friendly desktop environment to compete with KDE. IBM announces a comprehensive project to improve support for Linux.

• 2000: The office suite StarOffice is released under the LGPL, laying the foundation for a versatile free office suite for Linux.

• 2001: Die 2.4er-Serie wird im Januar frei gegeben. Der Kernel unterstützt nun bis zu 64 GByte RAM, 64-Bit-Dateisysteme, USB und Journaling Filesysteme.

• 2002: Die Entwicklergemeinschaft um OpenOffice.org bringt die Version 1.0 der Suite heraus. Ebenso wird der freie Webbrowser Mozilla in der Version 1.0 veröffentlicht. Im September infiziert der Wurm Slapper als erster Linux-Wurm überhaupt eine nennenswerte Anzahl von Linux-Rechnern

• 2003: Ende des Jahres wird der Kernel 2.6 freigegeben, nachdem Linus Torvalds vorher zum OSDL gewechselt war. Des Weiteren verbreitet sich Linux immer mehr auf Embedded Devices.

• 2004: Das XFree86 Team spaltet sich, es entwickelt sich die X.Org Foundation, die eine deutlich schnellere Entwicklung des X-Servers für Linux ermöglicht und verwirklicht.

• 2005: Das Projekt OpenSuSE wird als freie Community-Distribution von Novell gestartet. Außerdem erschien im Oktober OpenOffice.org in der Version 2.0, die den OpenDocument-Standard von OASIS unterstützt.

• 2006: Die Techniken Xgl von Novell und AIGLX von Red Hat ermöglichen die einfache Nutzung hardwarebeschleunigter Effekte auf dem Linux-Desktop.

[edit] References

1. ^ ^{a b} Linus Torvalds, David Diamond: Just for Fun. The Story of an Accidental Revolutionary. HarperBusiness, New York, 2001, ISBN 0066620724
2. ^ Linus Torvalds: What would you like to see most in minix? from Usenet, 25.08.1991
3. ^ Linux-Kernel, Version 0.99 (Z-kompimiert, 830 kB) from the kernel.org-FTP-Server. December 1992
4. ^ Hiroo Yamagata: The Pragmatist of Free Software Linus Torvalds Interview, 05.08.1997
5. ^ Andrew Tanenbaum, Linus Torvalds and others: Linux is obsolete Usenet post, 29.01.1992
6. ^ Andrew Tanenbaum: Some Notes on the "Who wrote Linux" Kerfuffle, Release 1.5 from his private webpage, 20.05.2004
7. ^ Get the Facts. Microsoft (2004). Retrieved on 2006-11-24.
8. ^ Linus Torvalds: Linus trademarks Linux?!! from the linux-Kernel mailing list, 21.08.2005

[edit] See also

• Unix#History

[edit] Further reading

• Glyn Moody: Rebel code : Linux and the Open Source Revolution Allen Lane, New York 2001, ISBN 0713995203
• Robert Young, Wendy Goldman Rohm: Under the Radar: How Red Hat Changed the Software Business--and Took Microsoft by Surprise Coriolis Group Books, 1999 ISBN 1576105067
• Eric S. Raymond: The Cathedral & the Bazaar. Musings on Linux and Open Source by an Accidental Revolutionary. O'Reilly, Sebastopol CA 1999 (Online), ISBN 1565927249
• Bernhard Reiter: Wandel der IT. Mehr als 20 Jahre Freie Software. in: HMD. Praxis der Wirtschaftsinformatik. dpunkt.verl., Heidelberg 2004,238 (Aug.), S.83–91 (online). ISSN 0723-5208

[edit] External links

• "Die reine Wahrheit" - Pro-Linux-Kampagnenwebseite von Novell
• "The Linux at IBM competitive advantage" - Linux advocacy site from IBM
• "Truth Happens" - Linux advocacy site from Red Hat
• die XP-Distribution im Kurztest - nicht ganz ernstgemeintes Windows XP Review unter den Kriterien einer Linux-Distribution auf LinuxUser
• Pro-Linux - Das Linux-Portal