Slackware 13.1slackware-13.1

Wed May 19 08:58:23 UTC 2010 Slackware 13.1 x86_64 stable is released! Lots of thanks are due -- see the RELEASE_NOTES and the rest of the ChangeLog for credits. The ISOs are on their way to replication, a 6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD. We are taking pre-orders now at store.slackware.com, and offering a discount if you sign up for a subscription. Consider picking up a copy to help support the project. Thanks again to the Slackware community for testing, contributing, and generally holding us to a high level of quality. :-) Enjoy!
author: Patrick J Volkerding <volkerdi@slackware.com> 2010-05-19 08:58:23 +0000
committer: Eric Hameleers <alien@slackware.com> 2018-05-31 22:43:05 +0200
commit: b76270bf9e6dd375e495fec92140a79a79415d27 (patch)
tree: 3dbed78b2279bf9f14207a16dc634b90995cbd40 /misc/slackbook/html/process-control-foregrounding.html
parent: 5a12e7c134274dba706667107d10d231517d3e05 (diff)
download: current-b76270bf9e6dd375e495fec92140a79a79415d27.tar.gz
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+<!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>Foregrounding</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="Process Control" href="process-control.html" />
+<link rel="PREVIOUS" title="Process Control" href="process-control.html" />
+<link rel="NEXT" title="ps" href="process-control-ps.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="process-control.html"
+accesskey="P">Prev</a></td>
+<td width="80%" align="center" valign="bottom">Chapter 11 Process Control</td>
+<td width="10%" align="right" valign="bottom"><a href="process-control-ps.html"
+accesskey="N">Next</a></td>
+</tr>
+</table>
+
+<hr align="LEFT" width="100%" />
+</div>
+
+<div class="SECT1">
+<h1 class="SECT1"><a id="PROCESS-CONTROL-FOREGROUNDING"
+name="PROCESS-CONTROL-FOREGROUNDING">11.2 Foregrounding</a></h1>
+
+<p>If you need to interact with a backgrounded process, you can bring it back into the
+foreground. If you've only got one backgrounded process, you can bring it back by
+typing:</p>
+
+<table border="0" bgcolor="#E0E0E0" width="100%">
+<tr>
+<td>
+<pre class="SCREEN">
+<samp class="PROMPT">%</samp> <kbd class="USERINPUT">fg</kbd>
+</pre>
+</td>
+</tr>
+</table>
+
+<p>If the program is not done running, the program will take control over you terminal
+and you will not be returned to a prompt. Sometimes, the program will finish running
+while backgrounded. In this instance, you'll get a message like this:</p>
+
+<table border="0" bgcolor="#E0E0E0" width="100%">
+<tr>
+<td>
+<pre class="SCREEN">
+[1]+  Done              /bin/ls $LS_OPTIONS
+</pre>
+</td>
+</tr>
+</table>
+
+<p>That tells you that the backgrounded process (in this case <tt class="COMMAND">ls</tt>
+- not terribly interesting) has completed.</p>
+
+<p>It is possible to have several processes backgrounded at once. When this happens,
+you'll need to know which process you want to bring back to the foreground. Just typing
+<tt class="COMMAND">fg</tt> will foreground the process that was last backgrounded. What
+if you had a whole list of processes in the background? Luckily, bash includes a command
+to list all the processes. It's called <tt class="COMMAND">jobs</tt> and gives output
+like so:</p>
+
+<table border="0" bgcolor="#E0E0E0" width="100%">
+<tr>
+<td>
+<pre class="SCREEN">
+<samp class="PROMPT">%</samp> <kbd class="USERINPUT">jobs</kbd>
+[1]   Stopped                 vim
+[2]-  Stopped                 amp
+[3]+  Stopped                 man ps
+</pre>
+</td>
+</tr>
+</table>
+
+<p>This shows you a list of all the processes that are backgrounded. As you can see, they
+are all stopped. This means that the processes are suspended. The number is a sort of ID
+for all the backgrounded processes. The ID with a plus sign beside it (<var
+class="LITERAL">man ps</var>) is the process that will be foregrounded if you just type
+<tt class="COMMAND">fg</tt>.</p>
+
+<p>If you wanted to foreground <tt class="COMMAND">vim</tt>, you would type:</p>
+
+<table border="0" bgcolor="#E0E0E0" width="100%">
+<tr>
+<td>
+<pre class="SCREEN">
+<samp class="PROMPT">%</samp> <kbd class="USERINPUT">fg 1</kbd>
+</pre>
+</td>
+</tr>
+</table>
+
+<p>and <tt class="COMMAND">vim</tt> would spring back up to the console. Backgrounding
+processes can be very useful if you only have one terminal open over a dialup connection.
+You can have several programs running on that one terminal, periodically switching back
+and forth between them.</p>
+</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="process-control.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="process-control-ps.html"
+accesskey="N">Next</a></td>
+</tr>
+
+<tr>
+<td width="33%" align="left" valign="top">Process Control</td>
+<td width="34%" align="center" valign="top"><a href="process-control.html"
+accesskey="U">Up</a></td>
+<td width="33%" align="right" valign="top"><tt class="COMMAND">ps</tt></td>
+</tr>
+</table>
+</div>
+</body>
+</html>
+
author	Patrick J Volkerding <volkerdi@slackware.com>	2010-05-19 08:58:23 +0000
committer	Eric Hameleers <alien@slackware.com>	2018-05-31 22:43:05 +0200
commit	b76270bf9e6dd375e495fec92140a79a79415d27 (patch)
tree	3dbed78b2279bf9f14207a16dc634b90995cbd40 /misc/slackbook/html/process-control-foregrounding.html
parent	5a12e7c134274dba706667107d10d231517d3e05 (diff)
download	current-b76270bf9e6dd375e495fec92140a79a79415d27.tar.gz