Communications

<BODY LANG="EN"> <HR><center> <table border=1> <td><img height=36 width=36 alt="" src="http://www.cs.utah.edu/icons/latex2html/previous_fade.gif"></td> <td><A NAME="tex2html23" HREF="../../../classes/Unix/contents.shtml"><img height=36 width=36 alt="UP" src="http://www.cs.utah.edu/icons/latex2html/up.gif"></A></td> <td><A NAME="tex2html25" HREF="node1.shtml"><img height=36 width=36 alt="NEXT" src="http://www.cs.utah.edu/icons/latex2html/next.gif"></A></td> <td><a href="contents-unix08.shtml"><img height=36 width=36 alt="CONTENTS" src="http://www.cs.utah.edu/icons/latex2html/toc.gif"></a></td> <td>     </td> </table> </center> <HR> <P> <H1>Communications</H1> <P> All of the computers in this room are networked together. For that matter, thousands of computers across campus are networked together, and millions of computers around the world are networked together. In this lesson you will learn how to communicate with the users of these computers. For the most part, you will be communicating only with users within the University. <P> Before you can communicate with anyone, you must know their net address. A full net address is something like <tt>username@eng.utah.edu</tt>. An address consists of a user name, a machine name, and a series of qualifiers that pin down the location of the machine within the world. To communicate with a user on the same machine, you need use only the user name: <tt>username</tt>. To communicate with a user on a different machine within the university, you must include a little more detail: <tt>username@eng</tt>. To communicate outside of the university, you must use the full net address. <P> There are several different ways to communicate. <P> <UL> <LI> If you have an account on a different machine (and you probably have accounts on dozens), you can use the <tt>ssh</tt> command to use that machine remotely. <LI> The most common means of communication is <em>electronic mail</em>, which allows you to send messages to specific users. <LI> Mozilla supports an <em>electronic bulletin board service</em> known as Usenet or just ``News''. It supports communications with large sets of users both university- and world-wide on such topics as local job announcements, golf tips, and Star Trek. <P> </UL><HR><center> <table border=1> <td><img height=36 width=36 alt="" src="http://www.cs.utah.edu/icons/latex2html/previous_fade.gif"></td> <td><A NAME="tex2html23" HREF="../../../classes/Unix/contents.shtml"><img height=36 width=36 alt="UP" src="http://www.cs.utah.edu/icons/latex2html/up.gif"></A></td> <td><A NAME="tex2html25" HREF="node1.shtml"><img height=36 width=36 alt="NEXT" src="http://www.cs.utah.edu/icons/latex2html/next.gif"></A></td> <td><a href="contents-unix08.shtml"><img height=36 width=36 alt="CONTENTS" src="http://www.cs.utah.edu/icons/latex2html/toc.gif"></a></td> <td>     </td> </table> </center> <HR> </BODY>