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diff --git a/slackbook/html/shell-vt.html b/slackbook/html/shell-vt.html deleted file mode 100644 index 2d28160c..00000000 --- a/slackbook/html/shell-vt.html +++ /dev/null @@ -1,137 +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>Virtual Terminals</title> -<meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /> -<link rel="HOME" title="Slackware Linux Essentials" href="index.html" /> -<link rel="UP" title="The Shell" href="shell.html" /> -<link rel="PREVIOUS" title="The Bourne Again Shell (bash)" href="shell-bash.html" /> -<link rel="NEXT" title="Filesystem Structure" href="filesystem-structure.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="SECT1" 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="shell-bash.html" -accesskey="P">Prev</a></td> -<td width="80%" align="center" valign="bottom">Chapter 8 The Shell</td> -<td width="10%" align="right" valign="bottom"><a href="filesystem-structure.html" -accesskey="N">Next</a></td> -</tr> -</table> - -<hr align="LEFT" width="100%" /> -</div> - -<div class="SECT1"> -<h1 class="SECT1"><a id="SHELL-VT" name="SHELL-VT">8.4 Virtual Terminals</a></h1> - -<p>So you're in the middle of working on something and you decide you need to do -something else. You could just drop what you're doing and switch tasks, but this is a -multi-user system, right? And you can log in as many times simultaneously as you want, -right? So why should you have to do one thing at a time?</p> - -<p>You don't. We can't all have multiple keyboards, mice, and monitors for one machine; -chances are most of us don't want them. Clearly, hardware isn't the solution. That leaves -software, and Linux steps up on this one, providing “virtual terminals”, or -“VTs”.</p> - -<p>By pressing <kbd class="USERINPUT">Alt</kbd> and a function key, you can switch -between virtual terminals; each function key corresponds to one. Slackware has logins on -6 VTs by default. <b class="KEYCAP">Alt</b>+<b class="KEYCAP">F2</b> will take you to the -second one, <b class="KEYCAP">Alt</b>+<b class="KEYCAP">F3</b> to the third, etc.</p> - -<p>The rest of the function keys are reserved for X sessions. Each X session uses its own -VT, beginning with the seventh (<b class="KEYCAP">Alt</b>+<b class="KEYCAP">F7</b>) and -going up. When in X, the <b class="KEYCAP">Alt</b>+<b class="KEYCAP">Function key</b> -combination is replaced with <b class="KEYCAP">Ctrl</b>+<b class="KEYCAP">Alt</b>+<b -class="KEYCAP">Function</b>; so if you are in X and want to get back to a text login -(without exiting your X session), <b class="KEYCAP">Ctrl</b>+<b class="KEYCAP">Alt</b>+<b -class="KEYCAP">F3</b> will take you to the third. (<b class="KEYCAP">Alt</b>+<b -class="KEYCAP">F7</b> will take you back, assuming you're using the first X session.)</p> - -<div class="SECT2"> -<h2 class="SECT2"><a id="AEN3024" name="AEN3024">8.4.1 Screen</a></h2> - -<p>But what about situations where there are no virtual terminals? What then? -Fortunately, slackware includes a beautiful screen manager aptly named <tt -class="COMMAND">screen</tt>. <tt class="COMMAND">screen</tt> is a terminal emulator that -has virtual terminal like capabilities. Executing <tt class="COMMAND">screen</tt> flashes -a brief introduction, then dumps to a terminal. Unlike the standard virtual terminals, -<tt class="COMMAND">screen</tt> has its own commands. All <tt class="COMMAND">screen</tt> -commands are prefixed with a <b class="KEYCAP">Crtl</b>+<b class="KEYCAP">A</b> -keystroke. For example, <b class="KEYCAP">Ctrl</b>+<b class="KEYCAP">A</b>+<b -class="KEYCAP">C</b> will create a new terminal session. <b class="KEYCAP">Ctrl</b>+<b -class="KEYCAP">A</b>+<b class="KEYCAP">N</b> will switch to the next terminal. <b -class="KEYCAP">Ctrl</b>+<b class="KEYCAP">A</b>+<b class="KEYCAP">P</b> switches to the -previous terminal.</p> - -<p><tt class="COMMAND">screen</tt> also supports detaching and re-attaching to <tt -class="COMMAND">screen</tt> sessions which is particularly useful for remote sessions via -<tt class="COMMAND">ssh</tt> and <tt class="COMMAND">telnet</tt>, (more on those later). -<b class="KEYCAP">Ctrl</b>+<b class="KEYCAP">A</b>+<b class="KEYCAP">D</b> will detach -from the currently running screen. Executing <tt class="COMMAND">screen -r</tt> will list -all currently running screen sessions you may reattach to.</p> - -<table border="0" bgcolor="#E0E0E0" width="100%"> -<tr> -<td> -<pre class="SCREEN"> -<samp class="PROMPT">%</samp> <kbd class="USERINPUT">screen -r</kbd> -There are several suitable screens on: - 1212.pts-1.redtail (Detached) - 1195.pts-1.redtail (Detached) - 1225.pts-1.redtail (Detached) - 17146.pts-1.sanctuary (Dead ???) -Remove dead screens with 'screen -wipe'. -Type "screen [-d] -r [pid.]tty.host" to resume one of them. -</pre> -</td> -</tr> -</table> - -<p>Running <tt class="COMMAND">screen -r 1212</tt> would reattach to the first screen -listed. I mentioned earlier how useful this was for remote sessions. If I were to login -to a remote slackware server via <tt class="COMMAND">ssh</tt>, and my connection was -severed by some chance occurrence such as a local power failure, whatever I was doing at -that moment would instantly perish, which can be a horrible thing for your server. Using -<tt class="COMMAND">screen</tt> prevents this by detaching my session if my connection is -dropped. Once my connection is restored, I can reattach to my screen session and resume -right where I left off.</p> -</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="shell-bash.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="filesystem-structure.html" -accesskey="N">Next</a></td> -</tr> - -<tr> -<td width="33%" align="left" valign="top">The Bourne Again Shell (bash)</td> -<td width="34%" align="center" valign="top"><a href="shell.html" -accesskey="U">Up</a></td> -<td width="33%" align="right" valign="top">Filesystem Structure</td> -</tr> -</table> -</div> -</body> -</html> - |