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diff --git a/slackbook/html/shell.html b/slackbook/html/shell.html deleted file mode 100644 index aa259c8c..00000000 --- a/slackbook/html/shell.html +++ /dev/null @@ -1,166 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" - "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> -<html xmlns="http://www.w3.org/1999/xhtml"> -<head> -<meta name="generator" content="HTML Tidy, see www.w3.org" /> -<title>The Shell</title> -<meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /> -<link rel="HOME" title="Slackware Linux Essentials" href="index.html" /> -<link rel="PREVIOUS" title="Dual Booting" href="booting-dual.html" /> -<link rel="NEXT" title="The Command Line" href="shell-command-line.html" /> -<link rel="STYLESHEET" type="text/css" href="docbook.css" /> -<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> -</head> -<body class="CHAPTER" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#840084" -alink="#0000FF"> -<div class="NAVHEADER"> -<table summary="Header navigation table" width="100%" border="0" cellpadding="0" -cellspacing="0"> -<tr> -<th colspan="3" align="center">Slackware Linux Essentials</th> -</tr> - -<tr> -<td width="10%" align="left" valign="bottom"><a href="booting-dual.html" -accesskey="P">Prev</a></td> -<td width="80%" align="center" valign="bottom"></td> -<td width="10%" align="right" valign="bottom"><a href="shell-command-line.html" -accesskey="N">Next</a></td> -</tr> -</table> - -<hr align="LEFT" width="100%" /> -</div> - -<div class="CHAPTER"> -<h1><a id="SHELL" name="SHELL"></a>Chapter 8 The Shell</h1> - -<div class="TOC"> -<dl> -<dt><b>Table of Contents</b></dt> - -<dt>8.1 <a href="shell.html#SHELL-USERS">Users</a></dt> - -<dt>8.2 <a href="shell-command-line.html">The Command Line</a></dt> - -<dt>8.3 <a href="shell-bash.html">The Bourne Again Shell (bash)</a></dt> - -<dt>8.4 <a href="shell-vt.html">Virtual Terminals</a></dt> -</dl> -</div> - -<p>In a graphical environment, the interface is provided by a program that creates -windows, scrollbars, menus, etc. In a commandline environment, the user interface is -provided by a shell, which interprets commands and generally makes things useable. -Immediately after logging in (which is covered in this chapter), users are put into a -shell and allowed to go about their business. This chapter serves as an introduction to -the shell, and to the most common shell among Linux users-- the Bourne Again Shell -(bash). For more detailed information on anything in this chapter, check out the <tt -class="COMMAND">bash</tt>(1) man page.</p> - -<div class="SECT1"> -<h1 class="SECT1"><a id="SHELL-USERS" name="SHELL-USERS">8.1 Users</a></h1> - -<div class="SECT2"> -<h2 class="SECT2"><a id="AEN2678" name="AEN2678">8.1.1 Logging In</a></h2> - -<p>So you've booted, and you're looking at something that looks like this:</p> - -<table border="0" bgcolor="#E0E0E0" width="100%"> -<tr> -<td> -<pre class="SCREEN"> -Welcome to Linux 2.4.18 -Last login: Wed Jan 1 15:59:14 -0500 2005 on tty6. -darkstar login: -</pre> -</td> -</tr> -</table> - -<p>Hmm.. nobody said anything about a login. And what's a darkstar? Don't worry; you -probably didn't accidentally fire up a hyperspace comm-link to the Empire's artificial -moon. (I'm afraid the hyperspace comm-link protocol isn't currently supported by the -Linux kernel. Maybe the 2.8 kernel branch will at last provide this oft looked-for -support.) No, darkstar is just the name of one of our computers, and its name gets -stamped on as the default. If you specified a name for your computer during setup, you -should see it instead of darkstar.</p> - -<p>As for the login... If this is your first time, you'll want to log in as <tt -class="USERNAME">root</tt>. You'll be prompted for a password; if you set one during the -setup process, that's what it's looking for. If not, just hit enter. That's it-- you're -in!</p> -</div> - -<div class="SECT2"> -<h2 class="SECT2"><a id="AEN2693" name="AEN2693">8.1.2 Root: The Superuser</a></h2> - -<p>Okay, who or <span class="emphasis"><i class="EMPHASIS">what</i></span> is <tt -class="USERNAME">root</tt>? And what's it doing with an account on <span -class="emphasis"><i class="EMPHASIS">your</i></span> system?</p> - -<p>Well, in the world of Unix and similar operating systems (like Linux), there are users -and then there are users. We'll go into this in more detail later, but the important -thing to know now is that <tt class="USERNAME">root</tt> is the user above all users; <tt -class="USERNAME">root</tt> is all-powerful and all-knowing, and <span class="emphasis"><i -class="EMPHASIS">nobody</i></span> disobeys <tt class="USERNAME">root</tt>. It just isn't -allowed. <tt class="USERNAME">root</tt> is what we call a “superuser”, and -rightly so. And best of all, <tt class="USERNAME">root</tt> is <span class="emphasis"><i -class="EMPHASIS">you</i></span>.</p> - -<p>Cool, huh?</p> - -<p>If you're not sure: yes, that's very cool. The catch is, though, that root is -inherently allowed to break anything it so desires. You might want to skip ahead to <a -href="essential-sysadmin.html#ESSENTIAL-SYSADMIN-USERS-SCRIPTS">Section 12.1.1</a> and -see about adding a user; then login as that user and work from there. The traditional -wisdom is that it's best to only become the superuser when absolutely necessary, so as to -minimize the possibility of accidentally breaking something.</p> - -<p>By the way, if you decide you want to be root while you're logged in as someone else, -no problem. Just use the <tt class="COMMAND">su</tt>(1) command. You'll be asked for <tt -class="USERNAME">root's</tt> password and then it will make you <tt -class="USERNAME">root</tt> until you <tt class="COMMAND">exit</tt> or <tt -class="COMMAND">logout</tt>. You can also become any other user using <tt -class="COMMAND">su</tt>, provided you know that user's password: <tt class="COMMAND">su -logan</tt>, for instance, would make you me.</p> - -<div class="NOTE"> -<table class="NOTE" width="100%" border="0"> -<tr> -<td width="25" align="CENTER" valign="TOP"><img src="./imagelib/admon/note.png" -hspace="5" alt="Note" /></td> -<td align="LEFT" valign="TOP"> -<p><tt class="USERNAME">root</tt> is allowed to su to any user, without requiring their -password.</p> -</td> -</tr> -</table> -</div> -</div> -</div> -</div> - -<div class="NAVFOOTER"> -<hr align="LEFT" width="100%" /> -<table summary="Footer navigation table" width="100%" border="0" cellpadding="0" -cellspacing="0"> -<tr> -<td width="33%" align="left" valign="top"><a href="booting-dual.html" -accesskey="P">Prev</a></td> -<td width="34%" align="center" valign="top"><a href="index.html" -accesskey="H">Home</a></td> -<td width="33%" align="right" valign="top"><a href="shell-command-line.html" -accesskey="N">Next</a></td> -</tr> - -<tr> -<td width="33%" align="left" valign="top">Dual Booting</td> -<td width="34%" align="center" valign="top"> </td> -<td width="33%" align="right" valign="top">The Command Line</td> -</tr> -</table> -</div> -</body> -</html> - |