uc: Add a summary of the SCO lawsuit to the history section.

The new text summarizes the cited LWN article.

diff --git a/Unix_Concepts.m4 b/Unix_Concepts.m4
index c2968ac6106363c23e01fd443ee3e31394f50f7c..be51cc9096ad4af3e9bb5721e1bd67774f776be6 100644 (file)
--- a/Unix_Concepts.m4
+++ b/Unix_Concepts.m4
@@ -145,18 +145,34 @@ interface based on the X window system facilitated cheap workstations
 which ran a complete open source software stack. </p>
 
 <p> The success of Linux, or <em>GNU/Linux</em> as some prefer to
-call it for reasons that should now be clear, has only increased
-over time, to the point where commercial Unix systems are mostly
-irrelevant. Today Linux runs on a wide variety of machines ranging
-from supercomputers to workstations, smart phones and IOT (internet
-of things) devices with very limited resources. </p>
-
-<p> The same companies which almost killed Unix by commercializing it
-in order to maximize their profit make money with Linux today. However,
-they had to adjust their business model in order to comply with the
-GPL. Rather than selling proprietary software, they bundle open source
-software and sell support to paying customers. Some companies also
-sell hardware with Linux pre-installed. </p>
+call it for reasons that should now be clear, steadily increased over
+time. In 2003 the SCO group, a company which sold a proprietary Unix
+system, was unhappy about this progress and sued IBM, which offered
+various Linux products. SCO claimed to be the owner of Unix, and that
+Linux contained "millions of lines" of code copied from Unix. SCO's
+lawyers argued that the success of Linux originated from this theft
+of intellectual property and asked for $5 billion as compensation
+for the resulting losses. The company also tried to collect taxes
+from other Linux users. Microsoft funded SCO in these efforts. </p>
+
+<p> In the end SCO lost the lawsuit since it was evident that all that
+copied code never existed. In fact, the court ruled that SCO did not
+even own the Unix copyrights to begin with. Another fun fact is that
+the large number of bugs in the early Linux code actually helped to
+prove that Linux was original work. The long term effects of this
+lawsuit, an improved position of Linux and its ecosystem, last until
+the presence. Commercial Unix systems have become irrelevant as Linux
+runs on a wide variety of machines ranging from supercomputers to
+workstations, smart phones and IOT (internet of things) devices with
+very limited resources. </p>
+
+<p> While SCO went bankrupt eventually, some of the companies which
+almost killed Unix by maximizing their own profit still exist, and
+make money with Linux today. However, they had to adjust their
+business model in order to comply with the GPL. Rather than selling
+proprietary software, they bundle open source software and sell
+support to paying customers. Some companies also sell hardware with
+Linux pre-installed. </p>
 
 SUBSECTION(«Linux Distributions»)
 
@@ -2510,6 +2526,9 @@ SECTION(«Further Reading»)
        href="https://www.newyorker.com/business/currency/the-gnu-manifesto-turns-thirty">
        The GNU Manifesto Turns Thirty</a>, by Maria Bustillos. </li>
 
+       <li> <a href="https://lwn.net/Articles/924577/">The SCO lawsuit,
+       20 years later</a> </li>
+
        <li> <a
        href="http://www.catb.org/~esr/writings/unix-koans/end-user.html">
        The Koan of Master Foo and the End User</a>. </li>