📄 users-superuser.html
字号:
<!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 Superuser Account</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="Users and Basic Account Management" href="users.html" /><link rel="PREVIOUS" title="Introduction" href="users-introduction.html" /><link rel="NEXT" title="System Accounts" href="users-system.html" /><link rel="STYLESHEET" type="text/css" href="docbook.css" /></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">FreeBSD Handbook</th></tr><tr><td width="10%" align="left" valign="bottom"><a href="users-introduction.html"accesskey="P">Prev</a></td><td width="80%" align="center" valign="bottom">Chapter 13 Users and Basic AccountManagement</td><td width="10%" align="right" valign="bottom"><a href="users-system.html"accesskey="N">Next</a></td></tr></table><hr align="LEFT" width="100%" /></div><div class="SECT1"><h1 class="SECT1"><a id="USERS-SUPERUSER" name="USERS-SUPERUSER">13.3 The SuperuserAccount</a></h1><p>The superuser account, usually called <tt class="USERNAME">root</tt>, comespreconfigured to facilitate system administration, and should not be used for day-to-daytasks like sending and receiving mail, general exploration of the system, orprogramming.</p><p>This is because the superuser, unlike normal user accounts, can operate withoutlimits, and misuse of the superuser account may result in spectacular disasters. Useraccounts are unable to destroy the system by mistake, so it is generally best to usenormal user accounts whenever possible, unless you especially need the extraprivilege.</p><p>You should always double and triple-check commands you issue as the superuser, sincean extra space or missing character can mean irreparable data loss.</p><p>So, the first thing you should do after reading this chapter is to create anunprivileged user account for yourself for general usage if you have not already. Thisapplies equally whether you are running a multi-user or single-user machine. Later inthis chapter, we discuss how to create additional accounts, and how to change between thenormal user and superuser.</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="users-introduction.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-system.html"accesskey="N">Next</a></td></tr><tr><td width="33%" align="left" valign="top">Introduction</td><td width="34%" align="center" valign="top"><a href="users.html"accesskey="U">Up</a></td><td width="33%" align="right" valign="top">System Accounts</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
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -