📄 95779.html
字号:
<html><head><title>找回超级用户密码 [Linux]</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><SCRIPT language=JavaScript><!--var mystat=0;//price selectfunction myout(){mystat=0;window.setTimeout("mycheck()",5);}function myin(){mystat=1;}function mycheck(){if (mystat==0) MM_showHideLayers('price','','hide');}//price selectfunction MM_openBrWindow(theURL,winName,features) { //v2.0 window.open(theURL,winName,features);}function MM_findObj(n, d) { //v3.0 var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) { d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);} if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n]; for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;}function MM_showHideLayers() { //v3.0 var i,p,v,obj,args=MM_showHideLayers.arguments; for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2]; if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; } obj.visibility=v; }}//--></SCRIPT><style type="text/css"><!--.btd { font-size: 14.8px}--></style><LINK REL="stylesheet" HREF="/css/text.css"></head><body bgcolor="303880" leftmargin="0" marginwidth="0" topmargin="0" marginheight="0" LINK="#000000" VLINK="#000000" ALINK="#000000"><div align="center"> <script src=/js/hp_top.js></script> <SCRIPT SRC=/pcedu/js/ad_top_410art.js></SCRIPT> <SCRIPT SRC=/pcedu/js/ad_top_130art.js></SCRIPT> <SCRIPT SRC=/js/pcedu_top2.js></script> <div align="center"> <table width="760" border="0" cellspacing="0" cellpadding="0" bgcolor="#FFFFFF"> <tr> <td bgcolor="FFDDA2" width="1"><img src="/images/blank.gif" width="1" height="1"></td> <td bgcolor="FFA200" width="7"> </td> <td width="1" bgcolor="#000000"><img src="/images/blank.gif" width="1" height="1"></td> <td align="center" valign="top"> <table width="100%" border="0" cellspacing="0" cellpadding="0" height="1" bgcolor="#000000"> <tr> <td></td> </tr> </table> <scriptsrc=/js/pcedu_menu.js></script> <TABLE WIDTH="98%" BORDER="0" CELLSPACING="0" CELLPADDING="2" HEIGHT="22"> <TR> <TD HEIGHT="25">您现在的位置：<a href="/pcedu/index.html" >网络学院</a> > <a href="/pcedu/soft/index.html" >软件教室</a> > <a href="/pcedu/soft/st/index.html" >操作系统</a> > <a href="/pcedu/soft/st/linux/index.html" >Linux</a></TD> </TR> </TABLE> <TABLE WIDTH="99%" BORDER="0" CELLSPACING="0" CELLPADDING="6" BACKGROUND="/images/point.gif"> <TR> <TD ALIGN="CENTER"> </TD> <TD ALIGN="CENTER"><FONT SIZE="3" COLOR="#339900"><B> 找回超级用户密码</B></FONT><BR> </TD> <TD WIDTH="126" ALIGN="right" CLASS="sfont" ROWSPAN="2"> <P> 出处：中国电脑教育报<BR> 责任编辑：zyq</P> </TD> </TR> <TR> <TD WIDTH="96">[02-10-8 14:32] </TD> <TD ALIGN="CENTER">作者：郭志强 </TD> </TR> </TABLE> </td> <td width="4" valign="top"><img src="http://www.pconline.com.cn/images/000000.gif" width="4" height="1"></td> <td valign="top" width="171" bgcolor="FFF7EF"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td bgcolor="#000000" height="1"></td> </tr> <tr bgcolor="756DA1" align="center"> <td height="20"><font color="#FFFFFF">内容搜索 </font></td> </tr> </table> <SCRIPT LANGUAGE="JavaScript" SRC="/js/search_pcedu.js"></SCRIPT> <DIV ALIGN="CENTER"> <BR> </DIV> <DIV ALIGN=right> </DIV> </td> <td bgcolor="FFA200" width="6" class="bodyright"><img src="/images/blank.gif" width="1" height="1"></td> </tr> </table> <TABLE WIDTH="760" BORDER="0" CELLSPACING="0" CELLPADDING="0" BGCOLOR="#FFFFFF"> <TR> <TD BGCOLOR="FFDDA2" WIDTH="1"><IMG SRC="/images/blank.gif" WIDTH="1" HEIGHT="1"></TD> <TD BGCOLOR="FFA200" WIDTH="7"> </TD> <TD WIDTH="1" BGCOLOR="#000000"><IMG SRC="/images/blank.gif" WIDTH="1" HEIGHT="1"></TD> <TD ALIGN="center" VALIGN="top"> <DIV ALIGN="right"><TABLE WIDTH="99%" BORDER="0" CELLSPACING="0" CELLPADDING="5"> <TR VALIGN="TOP"> <TD CLASS="article"> <P><BR> 笔者的机器上装有Redhat Linux7.2操作系统，安装了KDE和GNOME桌面，因在安装时只设了超级用户root，但超级用户的权限太大了， 只适用于系统维护及安装软件时使用，平常使用应该用普通用户来登录。 所以需要新建一个普通用户。这倒也简单，打开“菜单→系统→账号管理器”，添加一个用户不就得了!可麻烦事就来了：退出以后再用root登录，输入密码，啊!密码错误，进不了系统了。我知道Redhat7.2下用户密码是保存在/etc/shadow里，应从这里寻找突破口。<br><br><IFRAME SRC="http://www.pconline.com.cn/script/ad_text_pcedu_5.html" SCROLLING="no" WIDTH="322" HEIGHT="290" MARGINWIDTH="0" MARGINHEIGHT="0" FRAMEBORDER="0" ALIGN="left">广告：d_text </IFRAME> 1、把系统安装光盘插入，重启机器，启动时迅速按下Del键，进入CMOS，把启动顺序改为光盘先启动，这样就启动了Linux安装程序，按F5，按提示打入Linux rescue回车，进入救援模式，接下来是选择语言及键盘， 直接回车即可，程序提示已经把硬盘上的Linux系统安装到了/mnt/sysimage下，然后出现了超级用户提示符#。<br><br> 2、进入到硬盘etc目录下：cd /mnt/sysimage/etc，先做备份防不测：<br><br> cp shadow shadow.old 修改shadow文件的属性为可写：chmod +w shadow 然后用vi修改之：找到含root用户信息的那一行：root:....:，前两个冒号之间就是加密的密码，把它删除掉（冒号不能删），存盘退出。这样root的密码就为空了。<br><br> 不会用vi的用户可以采取如下方法：找一张DOS盘插入软驱，把Shadow拷贝到DOS盘上：mcopy shadow a:/ 然后在Windows下用附件中的记事本修改之，注意打开文件类型一定要选所有文件（*.*），存盘退出。最后再拷回：<br><br> mcopy a:/shadow mnt/sysimage/etc<br><br> 3、把Shadow的属性改回只读：chmod -w shadow，最后输入Exit退出，取出光盘。<br><br> 4、为安全起见，重启后应在终端窗口中再给root加上密码。</P> <P ALIGN=center> <BR> </P> <BR> <SPAN CLASS="article"><B>相关文章:</B><BR> <BR> <BLOCKQUOTE><a href="/pcedu/soft/virus/da/10206/68784.html">小心“送密码”邮件病毒-Win32.Frethem.A</a><BR> <a href="/pcedu/soft/virus/da/10206/68786.html">小心“送密码”邮件病毒-Win32.Frethem.B</a><BR> <a href="/pcedu/soft/virus/zt/10206/69046.html">小心“送密码”的邮件！</a><BR> <a href="/pcedu/soft/lan/kdwjr/10206/70833.html">红旗飞扬在宽带时代</a><BR> <a href="/pcedu/soft/lan/jywgl/10207/74788.html">在Win98中更改Win2000的密码</a><BR> <a href="/pcedu/soft/virus/da/10207/76722.html">“送密码”病毒无须附件也可感染</a><BR> <a href="/pcedu/soft/virus/zt/10207/76992.html">"送密码"病毒(Frethem)专题</a><BR> <a href="/pcedu/tuijian/system/decode/10208/83803.html">密码世界也精采</a><BR> <a href="/pcedu/soft/st/linux/10209/90930.html">Linux下的FTP服务器配置</a><BR> </BLOCKQUOTE> </SPAN></TD> </TR> <TR ALIGN="CENTER"> <TD CLASS="article"> <SCRIPT SRC=/pcedu/js/ad_but_410art.js></SCRIPT> <BR> <BR> <SCRIPT LANGUAGE="JavaScript" SRC="/js/hotfiles_new.js" id="hotfiles_new" defer></SCRIPT> </TD> </TR> </TABLE> </DIV> <P> </P> </TD> <TD WIDTH="4" VALIGN="top"><IMG SRC="http://www.pconline.com.cn/images/000000.gif" WIDTH="4" HEIGHT="1"></TD> <TD VALIGN="top" WIDTH="171" BGCOLOR="DEE7F7"> <DIV ALIGN="CENTER"> <SCRIPT SRC="/pcedu/js/ad_158_art.js"></SCRIPT> <BR> </DIV> <TABLE WIDTH="100%" BORDER="0" CELLSPACING="0" CELLPADDING="0"> <TR BGCOLOR="756DA1" ALIGN="center"> <TD HEIGHT="20"><FONT COLOR="#FFFFFF">本栏今日焦点 </FONT></TD> </TR> </TABLE> <DIV ALIGN=right> <TABLE WIDTH="170" BORDER="0" CELLSPACING="0" CELLPADDING="5"> <TR CLASS="sfont"> <TD> <SCRIPT SRC="/pcedu/js/files_top.js" id="files_top" defer></SCRIPT> </TD> </TR> </TABLE> </DIV> <DIV ALIGN="center"> <DIV ALIGN="center"> </DIV> <DIV ALIGN="center"> </DIV> </DIV> </TD> <TD BGCOLOR="FFA200" WIDTH="6" CLASS="bodyright"><IMG SRC="/images/blank.gif" WIDTH="1" HEIGHT="1"></TD> </TR> </TABLE> <table border="0" cellspacing="0" cellpadding="0" width="760" bgcolor="FFA200"> <tr> <td width="7" height="7" class="leftbottom"><img src="/images/blank.gif" width="7" height="9"></td> <td class="topbottom"><img src="/images/blank.gif"></td> <td width="6" class="rightbottom"><img src="/images/blank.gif" width="6"></td> </tr> </table> </div> <br> <SCRIPTSRC=/js/pc_but.js></SCRIPT> <script language="JavaScript" src="/pcedu/js/count_soft.js"> </script></div></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 + -