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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>Users and Basic Account Management</title><meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /><link rel="HOME" title="FreeBSD Handbook" href="index.html" /><link rel="UP" title="System Administration" href="system-administration.html" /><link rel="PREVIOUS" title="Shutdown Sequence" href="boot-shutdown.html" /><link rel="NEXT" title="Introduction" href="users-introduction.html" /><link rel="STYLESHEET" type="text/css" href="docbook.css" /></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">FreeBSD Handbook</th></tr><tr><td width="10%" align="left" valign="bottom"><a href="boot-shutdown.html"accesskey="P">Prev</a></td><td width="80%" align="center" valign="bottom"></td><td width="10%" align="right" valign="bottom"><a href="users-introduction.html"accesskey="N">Next</a></td></tr></table><hr align="LEFT" width="100%" /></div><div class="CHAPTER"><h1><a id="USERS" name="USERS"></a>Chapter 13 Users and Basic Account Management</h1><div class="TOC"><dl><dt><b>Table of Contents</b></dt><dt>13.1 <a href="users.html#USERS-SYNOPSIS">Synopsis</a></dt><dt>13.2 <a href="users-introduction.html">Introduction</a></dt><dt>13.3 <a href="users-superuser.html">The Superuser Account</a></dt><dt>13.4 <a href="users-system.html">System Accounts</a></dt><dt>13.5 <a href="users-user.html">User Accounts</a></dt><dt>13.6 <a href="users-modifying.html">Modifying Accounts</a></dt><dt>13.7 <a href="users-limiting.html">Limiting Users</a></dt><dt>13.8 <a href="users-personalizing.html">Personalizing Users</a></dt><dt>13.9 <a href="users-groups.html">Groups</a></dt></dl></div><i class="AUTHORGROUP"><span class="CONTRIB">Contributed by</span> NeilBlakey-Milner.</i> <div class="SECT1"><h1 class="SECT1"><a id="USERS-SYNOPSIS" name="USERS-SYNOPSIS">13.1 Synopsis</a></h1><p>FreeBSD allows multiple users to use the computer at the same time. Obviously, onlyone of those users can be sitting in front of the screen and keyboard at any one time <aid="AEN17933" name="AEN17933" href="#FTN.AEN17933"><span class="footnote">[1]</span></a>,but any number of users can log in through the network to get their work done. To use thesystem every user must have an account.</p><p>After reading this chapter, you will know:</p><ul><li><p>The differences between the various user accounts on a FreeBSD system.</p></li><li><p>How to add user accounts.</p></li><li><p>How to remove user accounts.</p></li><li><p>How to change account details, such as the user's full name, or preferred shell.</p></li><li><p>How to set limits on a per-account basis, to control the resources such as memory andCPU time that accounts and groups of accounts are allowed to access.</p></li><li><p>How to use groups to make account management easier.</p></li></ul><p>Before reading this chapter, you should:</p><ul><li><p>Understand the basics of <span class="TRADEMARK">UNIX</span>® and FreeBSD (<ahref="basics.html">Chapter 3</a>).</p></li></ul></div></div><h3 class="FOOTNOTES">Notes</h3><table border="0" class="FOOTNOTES" width="100%"><tr><td align="LEFT" valign="TOP" width="5%"><a id="FTN.AEN17933" name="FTN.AEN17933"href="users.html#AEN17933"><span class="footnote">[1]</span></a></td><td align="LEFT" valign="TOP" width="95%"><p>Well, unless you hook up multiple terminals, but we will save that for <ahref="serialcomms.html">Chapter 20</a>.</p></td></tr></table><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="boot-shutdown.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="users-introduction.html"accesskey="N">Next</a></td></tr><tr><td width="33%" align="left" valign="top">Shutdown Sequence</td><td width="34%" align="center" valign="top"><a href="system-administration.html"accesskey="U">Up</a></td><td width="33%" align="right" valign="top">Introduction</td></tr></table></div><p align="center"><small>This, and other documents, can be downloaded from <ahref="ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/">ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/</a>.</small></p><p align="center"><small>For questions about FreeBSD, read the <ahref="http://www.FreeBSD.org/docs.html">documentation</a> before contacting <<ahref="mailto:questions@FreeBSD.org">questions@FreeBSD.org</a>>.<br />For questions about this documentation, e-mail <<ahref="mailto:doc@FreeBSD.org">doc@FreeBSD.org</a>>.</small></p></body></html>⌨️ 快捷键说明
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