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	<title>LAMPDocs &#187; Free Software Basics</title>
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		<title>Linus Torvalds</title>
		<link>http://www.lampdocs.com/free-software-basics/linus-torvalds/</link>
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		<pubDate>Thu, 17 Jun 2010 10:42:30 +0000</pubDate>
		<dc:creator>serii</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
		<category><![CDATA[AMP]]></category>
		<category><![CDATA[emblem of Linux]]></category>
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		<category><![CDATA[Intel]]></category>
		<category><![CDATA[JBM]]></category>
		<category><![CDATA[linus]]></category>
		<category><![CDATA[Linus Torvalds]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Linux emblem]]></category>
		<category><![CDATA[Linux kernel]]></category>
		<category><![CDATA[MINIX]]></category>
		<category><![CDATA[Open Source Development Labs]]></category>
		<category><![CDATA[penguin Tux is Linus’ talisman]]></category>
		<category><![CDATA[RedHat Novel]]></category>
		<category><![CDATA[The Free Standards Group]]></category>
		<category><![CDATA[The Linux Foundation]]></category>
		<category><![CDATA[The penguin]]></category>
		<category><![CDATA[Unix operating systems]]></category>
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		<description><![CDATA[Linus Torvalds (born on December 28, 1969, Finland, Helsinki) is a famous software engineer. Torvalds marked the beginning of development of the Linux kernel and git revision control system. He grew interested in computers thanks to his maternal grandfather. In 1988 Linus Torvalds joined the University of Helsinki. In 1986 he graduated the University by [...]


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<li><a href='http://www.lampdocs.com/free-software-basics/open-source-initiative/' rel='bookmark' title='Open Source Initiative'>Open Source Initiative</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Linus Torvalds </strong>(born on December 28, 1969, Finland, Helsinki) is a famous software engineer. Torvalds marked the beginning of development of the Linux kernel and git revision control system. He grew interested in computers thanks to his maternal grandfather. In 1988<strong> Linus Torvalds</strong> joined the University of Helsinki. In 1986 he graduated the University by taking his master degree in computer science. A significant event in his life was the discovering and reading of the book “Operating Systems: Design and Implementation” by Andrew Tanenbaum. The author of this book presented the structure of <strong>Unix operating systems</strong> basing on the example of “Minix” Software. <strong>Linus</strong> took a great interest in this. Later on, he purchased a computer with an Intel 386 CPU and installed <strong>Minix</strong>. By analyzing this system, Linus discovered some defects in the program. Therefore he began to do the terminal emulation program independently. This was the beginning of <strong>Linux </strong>creation. Linus added new functions to the software. Owing to these innovations, the software acquired features of operational system of full value. Originally, Linus Torvalds was about to name his operational system “Freax”. However his friend suggested naming it Linux.</p>
<p>On the 17<sup>th</sup> of September, 1991, <strong>Linus </strong>presented the source code for general use. The system attracted attention of a great number of programmers. They began to work on its improvement and additions. The software has been spreading out up till now on terms of public license GNU-GPL.</div>
<div>The Minix’s creator, professor Andrew Tanenbaum came out against the system design. However, <strong>Linus Torvalds</strong> stood his ground.</p>
<p>It is interesting to note that a penguin Tux is Linus’ talisman. The penguin also became the emblem of Linux. In his book “Just for Fun”, <strong>Linus Torvalds</strong> wrote, that he chose a penguin for Linux emblem. As once he was pecked by a penguin in the zoo.</div>
<div>Besides, Linus displayed his talent of a poem writer. His main work is well famous.</p>
<p>In June, 2003, <strong>Linus</strong> began working under the patronage of the<strong> Open Source Development Labs</strong>. It is a consortium which is formed by high-tech companies such as JBM, Hewlett-Packard, Intel, AMP, RedHat Novel and others. The main goal of this consortium is to further the development of Linux.</p>
<p>In January 2007, <strong>Open Source Development Laboratory</strong> amalgamated with The Free Standards Group to form The Linux Foundation.</p>


<p>Related posts:<ol><li><a href='http://www.lampdocs.com/free-software-basics/how-torwalds-created-linux/' rel='bookmark' title='Free Software: How Did it Appear'>Free Software: How Did it Appear</a></li>
<li><a href='http://www.lampdocs.com/linux-distros/debian-jr/' rel='bookmark' title='Debian-Jr.'>Debian-Jr.</a></li>
<li><a href='http://www.lampdocs.com/free-software-basics/open-source-initiative/' rel='bookmark' title='Open Source Initiative'>Open Source Initiative</a></li>
</ol></p>]]></content:encoded>
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		<title>Free Software Foundation History</title>
		<link>http://www.lampdocs.com/free-software-basics/free-software-foundation-history/</link>
		<comments>http://www.lampdocs.com/free-software-basics/free-software-foundation-history/#comments</comments>
		<pubDate>Thu, 17 Jun 2010 10:33:11 +0000</pubDate>
		<dc:creator>serii</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
		<category><![CDATA[Free Software Foundation]]></category>
		<category><![CDATA[Free Software Foundation History]]></category>
		<category><![CDATA[free software movement]]></category>
		<category><![CDATA[FSF]]></category>
		<category><![CDATA[GNU project]]></category>
		<category><![CDATA[Linus Torvalds]]></category>
		<category><![CDATA[Linus Torvalds Award for free software]]></category>
		<category><![CDATA[Richard Stallman]]></category>
		<category><![CDATA[uncommercial organization]]></category>

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		<description><![CDATA[Free Software Foundation is an uncommercial organization which was founded by Richard Stallman in 1985. The main object of founding of the given corporation consisted in the necessity of support of free software movement which favours the freedom of programmers and computer users to create modify and redistribute free software. The headquarters of the Free [...]


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<li><a href='http://www.lampdocs.com/free-software-basics/how-torwalds-created-linux/' rel='bookmark' title='Free Software: How Did it Appear'>Free Software: How Did it Appear</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Free Software Foundation</strong> is an uncommercial organization which was founded by Richard Stallman in 1985. The main object of founding of the given corporation consisted in the necessity of support of free software movement which favours the freedom of programmers and computer users to create modify and redistribute free software. The headquarters of the <strong>Free Software Foundation</strong> are situated in Massachusetts, USA.</p>
<p>Till the middle of 1990’s the basic aim of FSF was the hiring of software developers who had to create free software for the GNU Project. Since that time, the employees and volunteers of <strong>FSF</strong> were engaged in developing of legal and structural issues for this movement and community.</p>
<p>It should be noted that only free software is to be used on computers of Free Software Foundation.</p>
<p>November 25, 2002 the Free <strong>Software Foundation</strong> started a program of FSF Associate Membership for private individuals. March 5, 2003 FSF also ran a program Corporate Patron for profit organizations. For instance in April, 2004 the Foundation included 45 of corporate patrons.</p>
<p>The FSF disposes of copyrights on different indispensible pieces which belong to the GNU system, such as GNU Compiler Collection. Being the copyright holder, it is empowered to enforce the GNU General Public License in case there copyright infringement on software takes place. Beginning with 1991 till 2001, GPL enforcement was put into effect unofficially usually by Richard Stallman. In March 2003, SCO registered a claim against IBM, asserting that the contribution on the part of IBM infringed the rights of SCO. On the 5<sup>th</sup> of November, 2003 FSF received a subpoena to appear in court. FSF managed to refute its negative influence on the promotion of free software.</p>
<p>From 2003 to 2005, FSF organized legal seminars that aimed to clarify the GPL and the law. Most of these seminars were given by Bradley M. Kuhn and Daniel Ravicher. This was the fist measure taken to provide official legal education on the GPL.</p>
<p>In 1999, FSF received Linus Torvalds Award for free software. In 2005, FSF was honored with Prix Ars Electronica Award of Distinction in the category “Digital Communities”.</p>


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<li><a href='http://www.lampdocs.com/free-software-basics/how-torwalds-created-linux/' rel='bookmark' title='Free Software: How Did it Appear'>Free Software: How Did it Appear</a></li>
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		<title>Free Software Foundation Activity</title>
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		<comments>http://www.lampdocs.com/free-software-basics/free-software-foundation-activity/#comments</comments>
		<pubDate>Thu, 17 Jun 2010 10:28:27 +0000</pubDate>
		<dc:creator>serii</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
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		<category><![CDATA[the GNU Affero General Public License]]></category>
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		<description><![CDATA[Free software is software that offers a compute user the freedom to study, modify and redistribute it. Free software is considered the foundation of a learning society, whose purpose is to share experience and knowledge with other computer users and programmers. The free software movement was founded by world famous programmer Richard Stallman in 1983. [...]


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<li><a href='http://www.lampdocs.com/free-software-basics/free-software-why-is-it-free/' rel='bookmark' title='Free Software. Why Is It Free?'>Free Software. Why Is It Free?</a></li>
<li><a href='http://www.lampdocs.com/free-software-basics/richard-stallman/' rel='bookmark' title='Richard Stallman'>Richard Stallman</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Free software</strong> is software that offers a compute user the freedom to study, modify and redistribute it. Free software is considered the foundation of a learning society, whose purpose is to share experience and knowledge with other computer users and programmers. The<strong> free software movement </strong>was founded by world famous programmer Richard Stallman in 1983. At that time the computer scientist initiated a GNU project. 2 years later Stallman launched the <strong>Free Software Foundation</strong>.</p>
<p>One of the main missions of this Foundation is the educating on behalf of programmers from every corner of the globe. Millions of people from the whole world give preference to free software which they install on their computers.</p>
<p>Year after year <strong>free software developers</strong> gather a great number of copyright assignments from individuals and corporations who work on free software.</p>
<p><strong>Free Software Foundation</strong> records the collected copyrights together with US copyright office and issue the license, which enables the users to distribute the software in question. This process guarantees that free software distributors work in compliance with the main obligations to convey freedom to other users, and to share, modify and study the code. This work is possible thanks to free software licensing and Compliance Laboratory. The GNU General Public License, being the most popular free software license in the world is published by FSF. The main object of the world recognized license is the conserving and promoting software freedom. Other licenses, published by Free Software Foundation are the GNU Lesser General Public License, the GNU Free Document License, the GNU Affero General Public License and the GNU Free Document License.</p>
<p><strong>The Foundation supports</strong> the freedom of software, being against proprietary software. It is also presents significant resources to the public that include the FSF/Unesco free software directory.</p>


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<li><a href='http://www.lampdocs.com/free-software-basics/richard-stallman/' rel='bookmark' title='Richard Stallman'>Richard Stallman</a></li>
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		<title>Richard Stallman</title>
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		<comments>http://www.lampdocs.com/free-software-basics/richard-stallman/#comments</comments>
		<pubDate>Thu, 17 Jun 2010 10:24:05 +0000</pubDate>
		<dc:creator>serii</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
		<category><![CDATA[and GNU Debugger]]></category>
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		<category><![CDATA[Richard Stallman]]></category>
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		<description><![CDATA[Richard Stallman (born March, 16 1953, New York City) is a world famous programmer. He is the author of such programs as GNU Emacs, the GNU Compiler Collection, and GNU Debugger. Stallman is also considered the founder of free software, GNU project, Free Software Foundation and League for Programming Freedom. During his years of studies [...]


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<li><a href='http://www.lampdocs.com/free-software-basics/free-software-foundation-history/' rel='bookmark' title='Free Software Foundation History'>Free Software Foundation History</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Richard Stallman</strong> (born March, 16 1953, New York City) is a world famous programmer. He is the author of such programs as GNU Emacs, the GNU Compiler Collection, and GNU Debugger. <strong>Stallman</strong> is also considered the founder of free software, GNU project, Free Software Foundation and League for Programming Freedom.</p>
<p>During his years of studies at Harvard University, <strong>Richard Stallman</strong> worked as a programmer at the MIT Artificial Intelligence Laboratory. After graduating from Harvard University, Stallman became a student at MIT. Soon he refused from his plans to continue his scientific education. In 1984 Stallman gave up working at the Laboratory, to set to work on <strong>GNU project</strong>, which was founded by him in September, 1983. Beginning with the middle of 1990’s,<strong> Richard Stallman</strong> developed less software, as he devoted his time to the developing of free software concepts.</p>
<p><strong>Stallman</strong> is the author of a great number of essays written on software freedom. He has regularly made speeches which are entitled “The GNU project and the <strong>Free Software Movemen</strong>t”, “The Dangers of Software Patents”, and “Copyright and Community in the age of Computer Networks”. In 1999 <strong>Stallman</strong> suggested developing a free on-line encyclopedia, by inviting people to contribute articles.</p>
<p>Over the time of many years, <strong>Richard Stallman</strong> has supported the exactness of his terminology. Stallman does not accept the term “<strong>open source software</strong>” because it does not render the value of the software such as freedom. He asks people to use the term “<strong>free software</strong>”, because of the freedom issues of this software. He also affirms that one has to say “proprietary software” instead of “closed source software”, in the event if, the software can not be distributed, used or modified freely. It is noteworthy that<strong> Richard Stallman</strong> takes the terminology most seriously. For instance, he agrees to give interview only to those journalists who will use his terminology in the article.</p>


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		<title>Free Software. Why Is It Free?</title>
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		<pubDate>Thu, 17 Jun 2010 10:16:39 +0000</pubDate>
		<dc:creator>serii</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
		<category><![CDATA[free of charge]]></category>
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		<category><![CDATA[freeware]]></category>
		<category><![CDATA[Liberated Software]]></category>
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		<category><![CDATA[redistribution and modifyin]]></category>
		<category><![CDATA[Richard Stallman]]></category>
		<category><![CDATA[software]]></category>
		<category><![CDATA[software freedom]]></category>
		<category><![CDATA[Unix world]]></category>
		<category><![CDATA[unlimited installation]]></category>

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		<description><![CDATA[Free software is software that gives its users the right to unlimited installation, program startup, free usage, studying, redistribution and modifying. The software is available free of charge, however in some cases it can have a fee. The name “free software” had been previously used in the Unix world. Not long ago it was accepted [...]


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<li><a href='http://www.lampdocs.com/free-software-basics/richard-stallman/' rel='bookmark' title='Richard Stallman'>Richard Stallman</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Free software</strong> is software that gives its users the right to unlimited installation, program startup, free usage, studying, redistribution and modifying. The software is available free of charge, however in some cases it can have a fee.</p>
<p>The name “<strong>free software</strong>” had been previously used in the <strong>Unix world</strong>. Not long ago it was accepted in the general computer community. Free software is also called as Freed Software, Liberated Software or freely redistributable software.</p>
<p>In 1983 <strong>Richard Stallman</strong> set up free software movement. The goal of the given movement was to provide the “<strong>software freedom</strong>” to computer users. It is noteworthy that the notion itself was introduced by Richard Stallman and it reflects the principles of open software engineering in the scientific community, which was formed in American universities in 1970’s. Richard Stallman formulated the principles of free software. These principles mention authors’ rights, which are transmitted to the computer users:</p>
<p><strong>Freedom 0:</strong> the software can be used freely for any purpose;</p>
<p><strong>Freedom 1:</strong> freedom to study the way the program operates and adapt it to your purposes, on condition that the incoming text of the program is available;</p>
<p><strong>Freedom 2:</strong> you may redistribute the copies of the program freely, to help your neighbors;</p>
<p><strong>Freedom 3:</strong> the program may be modified and improved freely. The improvements may be released to the public as well, to profit the whole community.</p>
<p>The main condition of the third freedom is the availability of the incoming text of the program and the possibility to make modifications and corrections in the program.</p>
<p>If the software satisfies the requirements of these four principles, it can be considered free software. Thus it is free and available for modifying and revising.</p>
<p>As opposed to <strong>“freeware” </strong>which does not have a fee, <strong>free software</strong> may be redistributed by collecting payment for it, or it can be absolutely free of charge. However, the main thing concerning the software in question is to follow four principles of freedom.</p>


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<li><a href='http://www.lampdocs.com/free-software-basics/richard-stallman/' rel='bookmark' title='Richard Stallman'>Richard Stallman</a></li>
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		<title>Free Software Advantages</title>
		<link>http://www.lampdocs.com/free-software-basics/free-software-advantages/</link>
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		<pubDate>Thu, 17 Jun 2010 10:12:35 +0000</pubDate>
		<dc:creator>serii</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
		<category><![CDATA[Advantages of Free Software]]></category>
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		<category><![CDATA[Free Software Advantages]]></category>
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		<category><![CDATA[Pragmatic Advantages of Free Software]]></category>
		<category><![CDATA[software]]></category>
		<category><![CDATA[The Variability Advantage]]></category>

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		<description><![CDATA[Pragmatic Advantages of Free Software Free software is distinguished by good quality because the code is studied and revised by a great number of programmers. The packages of free software are usually well designed in order to attract many developer communities. Another pragmatic advantage of the software in question is considered to be its security. [...]


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			<content:encoded><![CDATA[<p><strong>Pragmatic Advantages of Free Software</strong><br />
Free software is distinguished by good quality because the code is studied and revised by a great number of programmers. The packages of free software are usually well designed in order to attract many developer communities. Another pragmatic advantage of the software in question is considered to be its security. This fact is explained by the key and lock argument. The existing lock of free software is well kept. In addition, free software as well as proprietary software can be regarded as stable ones. Despite of the fact, that nowadays up-to-date versions of the software appear at great speed, still a computer user gives preference either to the previous or latest versions.</p>
<p>If the original developing company puts an end to its activity, you can always address another software company to find the necessary support. Moreover a user has unrestricted freedom to decide on the software and to use it for his/her purposes as long as s/he wishes. All the users have the possibility to share with experience with each other.</p>
<p><strong>The Variability Advantage</strong><br />
<strong>Free Software</strong> is developed to be adapted to the computer user’s needs. A computer user is given the freedom to revise and make changes in free software. Such freedom of revising and redistribution increases the variability of the program, making it available for the other users. The changes are usually accepted by the package maintainers. When the corrections do not present great interest, they can be rejected. They can also exist in the limited niche, for which they were developed.</p>
<p>As opposed to free software developers, proprietary software companies search for a niche beforehand. A computer user is not allowed to modify the software for the other niches. In spite of the fact, that a great number of proprietary software copies can be sold, still their software is distinguished by reduced variability in comparison with the<strong> free software companies</strong>.</p>


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<li><a href='http://www.lampdocs.com/free-software-basics/free-software-why-is-it-free/' rel='bookmark' title='Free Software. Why Is It Free?'>Free Software. Why Is It Free?</a></li>
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		<title>Open Source Initiative</title>
		<link>http://www.lampdocs.com/free-software-basics/open-source-initiative/</link>
		<comments>http://www.lampdocs.com/free-software-basics/open-source-initiative/#comments</comments>
		<pubDate>Thu, 17 Jun 2010 10:09:56 +0000</pubDate>
		<dc:creator>serii</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
		<category><![CDATA[Bruce Perens]]></category>
		<category><![CDATA[Corel Linux]]></category>
		<category><![CDATA[Eric Raymond]]></category>
		<category><![CDATA[Eric Steven Raymond]]></category>
		<category><![CDATA[IGOS (Indonesia)]]></category>
		<category><![CDATA[Microsoft Internet Explorer]]></category>
		<category><![CDATA[MyOSS (Malaysia)]]></category>
		<category><![CDATA[Netscape Communications Corporation]]></category>
		<category><![CDATA[Open Source]]></category>
		<category><![CDATA[Open Source community]]></category>
		<category><![CDATA[Open Source Definition]]></category>
		<category><![CDATA[Open Source Initiative]]></category>
		<category><![CDATA[Open Source users]]></category>
		<category><![CDATA[OSI]]></category>
		<category><![CDATA[OSI Board]]></category>
		<category><![CDATA[Sun Microsystems]]></category>

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		<description><![CDATA[Open Source Initiative is an organization which has been founded to promote free software. OSI was founded by Bruce Perens and Eric Steven Raymond in February, 1998. At that time Netscape Communications Corporation published Netscape Communicator source code as free software because of the decline in profits and competition with Microsoft Internet Explorer. Eric Raymond [...]


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</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Open Source Initiative</strong> is an organization which has been founded to promote free software. OSI was founded by Bruce Perens and Eric Steven Raymond in February, 1998. At that time Netscape Communications Corporation published Netscape Communicator source code as free software because of the decline in profits and competition with Microsoft Internet Explorer. Eric Raymond was at the head of <strong>OSI</strong> beginning with its founding until February, 2005. Michael Tiemann is the incumbent president of the organization in question.</p>
<p>Being the public organization,<strong> OSI</strong> runs the project Open Source Definition. It reviews and approves licenses as OSD-Conformant. The organization takes an active part in Open Source community building and education.</p>
<p>The members of <strong>OSI</strong> Board go on travels around the world in order to visit Open Source Conferences and to see <strong>Open Source</strong> users and developers. Thus <strong>OSI</strong> Board members have also the possibility to discuss private and public issues with bodies of executive power. These issues have to do with Open Source technologies, licenses and development of models which can ensure economic and strategic benefits.</p>
<p>The initial period of the open-source movement concurred with the dot-com phenomenon that was booming in 1998-2000. At that time the computer operating system Linux enjoyed wide popularity. It was also the period of open-source-friendly companies foundation. The open source movement drew the mainstream software industry’s attention. This lead to open source software offerings, received from software companies, which included Corel (Corel Linux), Sun Microsystems (OpenOfficeorg), IBM (Open   AFS). In 2001 when the dot-com era was booming, <strong>Open Source Initiative</strong> lived up the expectations of its advocates. Thus its activity was continued. The current status of <strong>OSI</strong> is “Active”. It is worth mentioning that open-source related movements of <strong>OSI</strong> include Iranian Free /Open Source users Community(Iran), MyOSS (Malaysia), IGOS (Indonesia) and Ma3bar (Arab Region).</p>


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		<title>Free Software: How Did it Appear</title>
		<link>http://www.lampdocs.com/free-software-basics/how-torwalds-created-linux/</link>
		<comments>http://www.lampdocs.com/free-software-basics/how-torwalds-created-linux/#comments</comments>
		<pubDate>Tue, 14 Jul 2009 09:30:08 +0000</pubDate>
		<dc:creator>Vladimir Usenco</dc:creator>
				<category><![CDATA[Free Software Basics]]></category>
		<category><![CDATA[freax]]></category>
		<category><![CDATA[free operating systems]]></category>
		<category><![CDATA[Free software]]></category>
		<category><![CDATA[freeware]]></category>
		<category><![CDATA[GNU]]></category>
		<category><![CDATA[linus]]></category>
		<category><![CDATA[Linus Torvalds]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[linux history]]></category>
		<category><![CDATA[MINIX]]></category>
		<category><![CDATA[operating system]]></category>
		<category><![CDATA[The Mascot]]></category>
		<category><![CDATA[Torvalds]]></category>
		<category><![CDATA[Unix]]></category>

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		<description><![CDATA[Free software Nowadays free software is so widespread that it’s hardly possible to find a user who doesn’t use at least some free applications. Moreover due to the fact that free software is very similar in functionality with the proprietary one, it’s understandable why many people tend to choose it. But what does “free software” [...]


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<li><a href='http://www.lampdocs.com/free-software-basics/free-software-advantages/' rel='bookmark' title='Free Software Advantages'>Free Software Advantages</a></li>
</ol>]]></description>
			<content:encoded><![CDATA[<p><strong>Free software</strong></p>
<p>Nowadays free software is so widespread that it’s hardly possible to find a user who doesn’t use at least some free applications. Moreover due to the fact that free software is very similar in functionality with the proprietary one, it’s understandable why many people tend to choose it. But what does “free software” term mean? Let’s check the precise definition.</p>
<p><strong>Free software</strong> represents software that is generally distributed with a “free software license” and can be used, studied, modified, and redistributed without or with minimal restrictions. To be more precise, here are the four freedoms which show that the software you get is free:</p>
<ul>
<li>The freedom to run the program, for any purpose (freedom 0).</li>
<li>The freedom to study how the program works, and adapt it to your needs (freedom 1). Access to the source code is a precondition for this.</li>
<li>The freedom to redistribute copies so you can help your neighbor (freedom 2).</li>
<li>The freedom to improve the program, and release your improvements to the public, so that the whole community benefits (freedom 3). Access to the source code is a precondition for this as well.</li>
</ul>
<p>However it should be mentioned that free software is not the same thing as “<em>freeware</em>”. The main difference between them consists in the fact that in case of freeware authors (or copyright holders) retain the rights to the software, i.e. users generally cannot study, modify or redistribute it. In addition to that free software being redistributable sometimes may not be free of charge, but cost some money, though the prices are generally quite affordable ones.</p>
<p>While talking about the “free software” term the great majority of users associate it with Linux OS and Linus Torvalds, thinking that they represent the source of free software. Though Linux, with no doubts, is the most popular free OS, there are two very important points to be emphasized…</p>
<ul>
<li>The appearance of the free software is the merit of Richard Stallman who is considered to initiate the free software movement in 1983. The main purpose of that movement was to satisfy the need for and ensure “software freedom” to computer users. Moreover in 1985 Stallman creates the Free Software Foundation in order to provide the organizational structure for his free software ideas.</li>
<li>Linux is just a kernel, but the operating system is GNU (GNU is Not Unix). GNU project was launched by Richard Stallman in 1983 with the aim to develop a complete Unix-like operating system composed entirely of free software. Thus this combination should be called as GNU/Linux operating system; still it’s generally incorrectly called Linux. However, Linus Torvalds who wrote Linux kernel in 1991 is against the GNU/Linux naming, arguing that Linux is not a GNU project.</li>
</ul>
<p><strong>Appearance of free operating systems</strong></p>
<p>The main principles of free software – openness and cooperation – appeared a long time before Richard Stallman created the Free Software Foundation and introduced the “free software” term. Thus in the 1950s and 1960s almost all software was developed by academics and corporate researchers being not considered as a commodity. At that time source code was distributed with software because users often modified it in order to fix bugs and add new functionalities. That’s why Richard Stallman stated in 1971 when he became a programmer at the Artificial Intelligence Laboratory of MIT (Massachusetts Institute of Technology) that the “software sharing community at MIT existed for many years”.</p>
<p>However in the late 1960s and 1970s the situation began to change. The main reason for that consisted in the fact that manufacturer’s software costs were dramatically increasing. Although some software was still free, the amount of proprietary one was becoming more and more significant. As a result in the late 1970s and 1980s most of the computer vendors and software companies charged for software licenses, considering them as assets and imposing legal restriction on the development of new software.</p>
<p>So here are the most important prerequisites of Stallman’s Free Software Movement and the appearance of free software:</p>
<p>1) <strong>High cost</strong> of the operating systems available at that time (MS-DOS, Unix and etc.), i.e. they were available for a very limited amount of users</p>
<p>2) <strong>Paying extra money </strong>for the operating system while buying computer made it even harder for a person to get one</p>
<p>3) <strong>Providing no source code </strong>for the systems meant:<br />
-  The users weren’t able to study the OS in order to understand the way it worked or to use it as a basis of their own work<br />
-  There was no way to adapt the system to users’ needs<br />
-  Users weren’t able to fix the bugs or improve the system</p>
<p>4) <strong>Proprietary licenses</strong> meant that the operation systems were not for sharing, thus slowing down the speed of OS improvement because there were less bug reports.</p>
<p>5) <strong>Slower development</strong> of software in comparison with hardware. In case of proprietary software it’s irrational to release new versions very often, because the users knowing that a better version is going to appear soon, won’t spend money to get the current version and etc.</p>
<p>As a result on September 27, 1983 Richard Stallman announced the plan for creating the GNU operating system, having the goal of bringing a wholly free software operating system into existence. The software development itself began in January 1984. Later on in March 1985 all the ideas of Richard Stallman were published as the GNU Manifesto. Most of GNU has been written by volunteers (some in their spare time, some paid by various companies, educational institutions, and other non-profit organizations.</p>
<p>Stallman contributed a lot in propagation of the “share with the neighbor” idea, giving the users the opportunity to be able to study, modify and redistribute the software that they use. According to Stallman’s point of view “freedom is vital for the sake of users and society as a moral value” and not for developing technically superior software; thus he does not agree with the phrase “software wants to be free” which is often mistakenly attributed to him.</p>
<p><strong>Creating Linux Kernel</strong></p>
<p>Before we go on with the history of creation of Linux kernel let’s find out what the main reason, which provoked 21 year-old Finnish student of Helsinki University of Technology, Linus Torvalds, to start that project, was. Though there wasn’t the only reason, the most important one is considered to be the fact that in 1991 no operating system was well adapted to the 32-bit features of the increasingly cheap and popular Intel 386 architecture for personal computers (MINIX had 16-bit design, but GNU and 386BSD kernels were not available at the time). Later Linus Torvalds stated that if either the GNU or 386BSD kernels were available at the time, he likely would not have written his own.</p>
<p>Despite the fact that the project of Linus Torvalds became well-known as the Linux kernel, initially it was a terminal emulator, which he used to access the large UNIX servers of the university. The program was written just for the specific hardware Linus was using at that moment (PC with an 80386 processor). As he wrote in <em>Just for Fun</em>, he eventually realized that he had written an operating system kernel.</p>
<p>Taking into consideration that Linus Tovalds developed it on Minix using GNU C compiler some of the researchers stated that young software engineer used Minix code while created the kernel. The main reason for such a statement was the time Linus spent on his invention. If Tanenbaum created Minix within some years, for Torvalds it took a couple of months to create Linux kernel. Another thing was that as a student Torvalds had access to Minix&#8217;s source code. However as Tanenbaum emphasized in his book Samizdat, Torvalds had not copied Minix’s design. Here is a short excerpt from his book:</p>
<p>“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…“</p>
<p>The unfriendly tone of this excerpt can be explained by the fact that there was quite an unpleasant Tanenbaum-Torvalds debate about Linux, which Tanenbaum considered to be obsolete since it was a monolithic kernel. However later on Tanenbaum’s prediction proved to be incorrect.</p>
<p>On 26<sup>th</sup> of August, 1991 Linus Torvalds posted his famous message to <em>comp.os.minix</em>, in which he wrote about the creation of free operating system for 386 AT clones. Since that time a lot of users contributed code to the project. The Linux version 0.01 had 10,239 lines of code and appeared by September 1991. It was just the kernel and as Linus mentioned “to get a working system you need a shell, compilers, a library etc. These are separate parts and may be under a stricter (or even looser) copyright. Most of the tools used with Linux are GNU software and are under the GNU copyleft…”</p>
<p>With the release of version 0.12 in February 1992 GNU General Public License (GPL) was adopted instead of the previous self-drafted license, which did not allow commercial redistribution. In March 1992 Torvalds decided to make a large jump as far as the version number was concerned and the new release was the version 0.95. The explanation was that there wasn’t so much work left until the final release of the version 1.0. Unfortunately that was too optimistic and the version 1.0.0 appeared just in two years. AS for the current latest version 2.6.30 it appeared on 9<sup>th</sup> of June 2009 and contains 11,637,173 lines of code.</p>
<p>Another interesting point I forgot to mention is the appearance of the Linux name… Although Torvalds considered the name “Linux”, he decided not to use it because to his mind it was too egoistical. So the name he wanted to call his invention was Freax – combination of “freak”, “free” and “x” (from Unix). However his coworker at the university, Ari Lemmke, didn’t think that Freax was a nice option, deciding to call it Linux (Torvalds didn’t know about that). Later as Linus found out about the name Ari gave to the project, he agreed it.</p>
<p>Although Linus Torvalds did not design Linux to be portable (he especially emphasized that “it is NOT portable, and it probably never will support anything other than AT-hard disks, as that&#8217;s all I have…”), at the moment Linux represents one of the most widely ported operating system kernels. As for the end of 2008, GNU/Linux was used on more that 87% of systems on the Top 500 supercomputers list. In addition to that it has been ported to different mobile and handheld devices. Moreover the Android operating system, which becomes very popular these days and is considered to have very decent potential, uses the Linux kernel as well.</p>
<p><strong>The Bottom Line</strong></p>
<p>As far as the license is concerned at the moment Linux is licensed under version 2 of the GPL, with no option to use a later version. Here are some of the terms and conditions of the GPL:</p>
<p>- Licensee is given permission to modify the work, as well as to copy and redistribute the wok or any derivative version<br />
- Licensee is allowed to charge a fee for this service if he/she wants to<br />
- Distributor may not impose “further restrictions on the rights granted by the GPL”<br />
- Programs distributed as pre-compiled binaries are accompanied by a copy of the source code ad etc.</p>
<p>However, according to the terms of the GNU GPL if no version is specified, then any version may be used. Still currently the great majority of the kernel programmers prefer GPL version 2 that version 3. If you would like to learn more about GNU GPL and its versions, please visit <a href="http://en.wikipedia.org/wiki/GNU_General_Public_License">this page</a>.</p>
<p>To sum up we should say that Linux and GNU developers, and many others who contributed to the design of GNU/Linux OS, manage to create a really functional, competitive and customizable operating system, which corresponds to all four Stallman’s freedom, ensuring thus the real freedom to the users.</p>


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