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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_6/content.html | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
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| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_6/content.html | 173 |
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diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_6/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_6/content.html new file mode 100644 index 0000000..52f8614 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_6/content.html @@ -0,0 +1,173 @@ +<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+<title>Content</title>
+<base target="_self">
+</head>
+
+<body background="../../images/bg.gif" topmargin="0" leftmargin="0" marginheight="0" marginwidth="0" onLoad="window.focus();" link="#808080" vlink="#808080" alink="#808080">
+
+<table border="0" cellpadding="0" cellspacing="0" width="100%">
+ <tr>
+ <td bgcolor="#336666" width="18" valign="top">
+ <img border="0" src="../../images/content_lines.gif" width="16" height="25">
+ <img border="0" src="../../images/transdot.gif" width="2" height="1"></td>
+ <td bgcolor="#336666"><b><font face="Arial" size="2" color="#FFFFFF">6.1</b></font></td>
+ <td bgcolor="#336666"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#336666" width="100%"><b><font face="Arial" size="2" color="#FFFFFF">
+ Workstations and Servers</font></b></td>
+ <td width="9" bgcolor="#336666"> </td>
+ </tr>
+ <tr>
+ <td bgcolor="#669999" height="25" width="18"> </td>
+ <td bgcolor="#669999" height="25"><b>
+ <font face="Arial" size="2" color="#FFFFFF">6.1.6</font></b></td>
+ <td bgcolor="#669999"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#669999" height="25" width="100%"><strong>
+ <font face="Arial" size="2" color="#FFFFFF">UNIX, Sun, HP, and LINUX</font></strong></td>
+ <td bgcolor="#669999" height="25" width="9"> </td>
+ </tr></table>
+
+<table border="0" cellpadding="0" cellspacing="0" width="95%" bordercolor="#111111">
+ <tr>
+ <td width="15"></td>
+ <td>
+
+ <p><font face="Arial" size="2"><b>Origins of UNIX</b><br>
+ UNIX is the name of a group of operating systems that trace their
+ origins back to 1969 at Bell Labs. Since its inception, UNIX was
+ designed to support multiple users and multitasking. UNIX was also one
+ of the first operating systems to include support for Internet
+ networking protocols. The history of UNIX, which now spans over 30
+ years, is complicated because many companies and organizations have
+ contributed to its development.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"></font></p>
+
+ <p><font face="Arial" size="2">UNIX was first written in assembly language, a primitive set of
+ instructions that control the internal instructions of a computer.
+ However, UNIX could only run on a specific type of computer. In 1971, Dennis
+ Ritchie created the C language. In 1973, Ritchie along with fellow
+ Bell Labs programmer Ken Thompson rewrote the UNIX system programs in
+ C language. Because C is a higher-level language, UNIX could be moved
+ or ported to another computer with far less programming effort. The
+ decision to develop this portable operating system proved to be the
+ key to the success of UNIX. During the 1970s, UNIX evolved through the
+ development work of programmers at Bell Labs and several universities,
+ notably the University of California, at Berkeley.
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12"> - </font>
+ <img border="0" src="../../images/3.gif" align="middle" width="12" height="12"></p>
+
+ <p><font face="Arial" size="2">When UNIX first started to be marketed commercially in the 1980s, it
+ was used to run powerful network servers, not desktop computers.
+ Today, there are dozens of different versions of UNIX, including the
+ following: </font></p>
+ <ul>
+ <li><font face="Arial" size="2">Hewlett Packard UNIX (HP-UX) </font>
+ </li>
+ <li><font face="Arial" size="2">Berkeley Software Design, Inc. (BSD
+ UNIX), which has produced derivatives such as FreeBSD</font></li>
+ <li><font face="Arial" size="2">Santa Cruz Operation (SCO) UNIX </font>
+ </li>
+ <li><font face="Arial" size="2">Sun Solaris </font></li>
+ <li><font face="Arial" size="2">IBM UNIX (AIX)</font></li>
+ </ul>
+
+ <p><font face="Arial" size="2">UNIX, in its various forms, continues
+ to advance its position as the reliable, secure OS of choice for
+ mission-critical applications that are crucial to the operation of a
+ business or other organization. UNIX is also tightly integrated with
+ TCP/IP. TCP/IP basically grew out of UNIX because of the need for LAN
+ and WAN communications.</font></p>
+
+ <p><font face="Arial" size="2">The Sun Microsystems Solaris Operating Environment and its core OS,
+ SunOS, is a high-performance, versatile, 64-bit implementation of
+ UNIX. Solaris runs on a wide variety of computers, from Intel-based
+ personal computers to powerful mainframes and supercomputers. Solaris
+ is currently the most widely used version of UNIX in the world for
+ large networks and Internet websites. Sun is also the developer of the
+ "Write Once, Run Anywhere" Java technology.</font></p>
+
+ <p><font face="Arial" size="2">Despite the popularity of Microsoft Windows on corporate LANs, much of
+ the Internet runs on powerful UNIX systems. Although UNIX is usually
+ associated with expensive hardware and is no user friendly,
+ recent developments, including the creation of Linux, have changed
+ that image. </font></p>
+
+ <p><font face="Arial" size="2"><b>Origins of Linux</b><br>
+ In 1991, a Finnish student named Linus Torvalds began work on an
+ operating system for an Intel 80386-based computer. Torvalds became
+ frustrated with the state of desktop operating systems, such as DOS,
+ and the expense and licensing issues associated with commercial UNIX. Torvalds set out to develop an operating system that was UNIX-like in
+ its operation but used software code that was open and completely free
+ of charge to all users.</font></p>
+
+ <p><font face="Arial" size="2">Torvald's work led to a world-wide
+ collaborative effort to develop Linux, an open source operating system
+ that looks and feels like UNIX. By the late 1990s, Linux had become a
+ viable alternative to UNIX on servers and Windows on the desktop. The
+ popularity of Linux on desktop PCs has also contributed to interest in
+ using UNIX distributions, such as FreeBSD and Sun Solaris on the
+ desktop. Versions of Linux can now run on almost any 32-bit processor,
+ including the Intel 80386, Motorola 68000, Alpha, and PowerPC chips.</font></p>
+
+ <p><font face="Arial" size="2">As with UNIX, there are numerous versions of Linux. Some are free
+ downloads from the web, and others are commercially distributed. The
+ following are a few of the most popular versions of Linux:</font></p>
+ <ul>
+ <li><font face="Arial" size="2">Red Hat Linux – distributed by Red
+ Hat Software </font></li>
+ <li><font face="Arial" size="2">OpenLinux – distributed by Caldera </font>
+ </li>
+ <li><font face="Arial" size="2">Corel Linux </font></li>
+ <li><font face="Arial" size="2">Slackware </font></li>
+ <li><font face="Arial" size="2">Debian GNU/Linux </font></li>
+ <li><font face="Arial" size="2">SuSE Linux </font></li>
+ </ul>
+
+ <p><font face="Arial" size="2">Linux is one of the most powerful and reliable operating systems in
+ the world today. Because of this, Linux has already made inroads as a
+ platform for power users and in the enterprise server arena. Linux is
+ less often deployed as a corporate desktop operating system. Although
+ graphical user interfaces (GUIs) are available to make Linux
+ user-friendly, most beginning users find Linux more difficult to use
+ than Mac OS or Windows. Currently, many companies, such as Red Hat,
+ SuSE, Corel, and Caldera, are striving to make Linux a viable
+ operating system for the desktop.
+ <img border="0" src="../../images/4.gif" align="absmiddle" width="12" height="12"> -
+ <img border="0" src="../../images/7.gif" align="absmiddle" width="12" height="12"></font></p>
+
+ <p><font face="Arial" size="2">Application support must be considered
+ when Linux is implemented on a desktop system. The number of business
+ productivity applications is limited when compared to Windows.
+ However, some vendors provide Windows emulation software, such as WABI
+ and WINE, which enables many Windows applications to run on Linux. Additionally, companies such as
+ Corel are making Linux versions of their office suites and other
+ popular software packages.</font></p>
+
+ <p><font face="Arial" size="2"><b>Networking with Linux</b><br>
+ Recent distributions of Linux have networking components built in for
+ connecting to a LAN, establishing a dialup connection to the Internet,
+ or other remote network. In fact, TCP/IP is integrated into the Linux
+ kernel instead of being implemented as a separate subsystem.</font></p>
+
+ <p><font face="Arial" size="2">Some advantages of Linux as a desktop operating system and network
+ client include the following:</font></p>
+ <ul>
+ <li><font face="Arial" size="2">It is a true 32-bit operating
+ system. </font></li>
+ <li><font face="Arial" size="2">It supports preemptive multitasking and virtual memory. </font>
+ </li>
+ <li><font face="Arial" size="2">The code is open source and thus
+ available for anyone to enhance and improve. </font></li>
+ </ul>
+
+ <p><font face="Arial" size="2"> </font></p>
+ </td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
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