A Few More Unix Commands, Redirection and Pipes

<BODY > <HR><center> <table border=1> <td><img height=36 width=36 alt="" src="../../../icons/latex2html/previous_fade.gif"></td> <td> <A NAME="tex2html3" HREF="../../../classes/Lab_Manual/contents.html"><img height=36 width=36 alt="UP" src="../../../icons/latex2html/up.gif"></A></td> <td> <A NAME="tex2html5" HREF="node1.html"><img height=36 width=36 alt="NEXT" src="../../../icons/latex2html/next.gif"></A></td> <td><a href="contents-unix_intro.html"><img height=36 width=36 alt="CONTENTS" src="../../../icons/latex2html/toc.gif"></a></td> </table> </center> <HR>  <P> Joe Zachary and Carleton DeTar <BR> <A NAME="tex2html1" HREF="mailto:detar@physics.utah.edu">detar@physics.utah.edu</A> <P> <P> <H1>A Few More Unix Commands, Redirection and Pipes</H1> <P> <P> This tutorial continues the introduction to Unix. You will learn about a few more useful Unix commands, how to specify absolute and relative paths, and how to use input and output redirection and pipes. <P> It is assumed that you have already completed the <A NAME="tex2html2" HREF="http://www.physics.utah.edu/~detar/lessons/minimum/minimum/minimum.html">Bare Bones lesson</A>. <P> For some of the commands it will be useful to work with a standard file. Let's create one called "no_use". <EM>If you already have this file, please delete it or rename it before creating it.</EM> Then create the file either by retyping these lines in your xterm window or better, still, by copying and pasting from this window: <PRE> cat > no_use It's not worth worrying about it. There's nothing you can do about it. No two quarks can occupy the same quantum mechanical state. </PRE> To view the file "no_use", type <PRE> cat no_use </PRE> You will use this file later. <P> <HR><center> <table border=1> <td><img height=36 width=36 alt="" src="../../../icons/latex2html/previous_fade.gif"></td> <td> <A NAME="tex2html3" HREF="../../../classes/Lab_Manual/contents.html"><img height=36 width=36 alt="UP" src="../../../icons/latex2html/up.gif"></A></td> <td> <A NAME="tex2html5" HREF="node1.html"><img height=36 width=36 alt="NEXT" src="../../../icons/latex2html/next.gif"></A></td> <td><a href="contents-unix_intro.html"><img height=36 width=36 alt="CONTENTS" src="../../../icons/latex2html/toc.gif"></a></td> </table> </center> <HR>  <HR><P><ADDRESS> <I></I> </ADDRESS> </BODY>