Revision as of 07:21, 16 January 2013 edit Inzy (talk \| contribs) Extended confirmed users 980 edits replaced 'impractical' with 'difficult and time-consuming', impractical does not explain anything, is very vague ← Previous edit		Revision as of 07:31, 16 January 2013 edit undo Msnicki (talk \| contribs) Extended confirmed users, Pending changes reviewers, Rollbackers 10,360 edits Undid revision 533332772 by Inzy (talk) "impractical", i.e., not sensible or realistic, seems pretty clear to me. Next edit →
Line 208: Linux and most GNU software are [[software license\|licensed]] under the [[GNU General Public License]] (GPL). The GPL requires that anyone who distributes Linux must make the source code (and any modifications) available to the recipient under the same terms. Other key components of a software system may use other licenses; many libraries use the [[GNU Lesser General Public License]] (LGPL), a more permissive variant of the GPL, and the [[X.org Server\|X.org]] implementation of the [[X Window System]] uses the [[MIT License]]. Torvalds states that the Linux kernel will not move from version 2 of the GPL to version 3. He specifically dislikes some provisions in the new license which prohibit the use of the software in [[digital rights management]],<ref>{{cite web \| url=http://lkml.org/lkml/2006/1/25/273 \| title=Re: GPL V3 and Linux ─ Dead Copyright Holders \| author=Torvalds, Linus \| date=26 January 2006 \| publisher=[[Linux Kernel Mailing List]]}}</ref><ref>{{cite web \| url=http://lkml.org/lkml/2006/9/25/161 \| title=Re: GPLv3 Position Statement \| author=Torvalds, Linus \| date=25 September 2006 \| publisher=[[Linux Kernel Mailing List]]}}</ref> and it would also be ~~difficult and time-consuming~~impractical to obtain permission from all the copyright holders, who number in the thousands.<ref>{{cite web\|url=http://www.linux-watch.com/news/NS3301105877.html \|title=– Keeping an Eye on the Penguin \|publisher=Linux-watch.com \|date=7 February 2006 \|accessdate=9 November 2010}}</ref> A 2001 study of [[Red Hat Linux]] 7.1 found that this distribution contained 30 million [[source lines of code]].<ref name = "estimating_size"/> Using the [[COCOMO\|Constructive Cost Model]], the study estimated that this distribution required about eight thousand man-years of development time. According to the study, if all this software had been developed by conventional [[proprietary software\|proprietary]] means, it would have cost about ${{formatprice\|{{inflation\|US\|1080000000\|2000}}\|0}} ({{CURRENTISOYEAR}} US dollars) to develop in the United States.<ref name = "estimating_size">{{cite web \| first = David A \| last = Wheeler \| date = 29 July 2002 \| url = http://www.dwheeler.com/sloc/redhat71-v1/redhat71sloc.html \| title = More Than a Gigabuck: Estimating GNU/Linux's Size \| accessdate =11 May 2006 }}</ref>

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