linux root密碼忘記了，如何找回來？

<span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', Simsun; font-size: 14px; line-height: 25px;">&nbsp; &nbsp;好久沒有玩LINUX了，今天小編公司的服務器掛了，就進去看看，可惡的是小編忘記了公司服務器的密碼了，還是LINUX的呢，麻煩出來了，怎麼辦呢？小編就研究了一下，一個早上才知道怎麼找回來，下面就介紹到3種方法可以找回來的，具體如下：</span> <div style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', Simsun; font-size: 14px; line-height: 25px;"> <p style="word-wrap: break-word; margin: 0px; padding: 0px;"><a href="http://www.dnzsb.com/plugin.php?id=iplus_seolinks:links&amp;url=ZGF0YS9hdHRhY2htZW50L3BvcnRhbC8yMDE0MDIvMjYvMjE1NDIyazN4cWM3N2V4NHBlcWlweS5wbmc=" style="word-wrap: break-word; color: rgb(51, 51, 51); text-decoration: none;" target="_blank"><img src=/uploads/allimg/140303/134RT345-0.png" style="word-wrap: break-word; border: none; max-width: 620px;" /></a></p> <div style="word-wrap: break-word;"> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;"><strong style="word-wrap: break-word; margin: 0px; padding: 0px;">linux root密碼找回方法一</strong></p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第1步：用grub引導系統時：在出現grub畫面時，用上下鍵選中你平時啟動linux的那一項(別選dos喲)，然後按e鍵</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第2步：再次用上下鍵選中你平時啟動linux的那一項(類似於kernel /boot/vmlinuz-2.4.18-14 ro root=LABEL=/)，然後按e鍵</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第3步：修改你現在見到的命令行，加入single，結果如下：</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　kernel /boot/vmlinuz-2.4.18-14 single ro root=LABEL=/ single</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第4步：回車返回，然後按b鍵啟動，即可直接進入linux命令行.</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第5步：使用以下命令&ldquo;vi /etc/shadow&rdquo;將第一行，即以root開頭的一行中root:後和下一個:前的內容刪除，第一行將類似於root::......保存</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　vi /etc/shadow</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第6步：reboot重啟，root密碼為空。</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">&nbsp;</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;"><strong style="word-wrap: break-word; margin: 0px; padding: 0px;">linux root密碼找回方法二</strong></p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第1步：在系統進入單用戶狀態，直接用passwd root去更改。</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第2步：用安裝光盤引導系統，進行linux rescue狀態，將原來/分區掛接上來,作法如下：</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　cd /mnt mkdir hd mount -t auto /dev/hdaX(原來/分區所在的分區號) hd cd hd chroot ./ passwd root</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">&nbsp;</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;"><strong style="word-wrap: break-word; margin: 0px; padding: 0px;">linux root密碼找回方法三</strong></p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第1步：在系統進入單用戶狀態，直接用passwd root去更改。</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第2步：用安裝光盤引導系統，進行linux rescue狀態，將原來/分區掛接上來,作法如下：</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　cd /mnt mkdir hd mount -t auto /dev/hdaX(原來/分區所在的分區號) hd cd hd chroot ./ passwd root</p> <p style="word-wrap: break-word; margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 24px;">　　

第3步：將本機的硬盤拿下來，掛到其他的linux系統上，</p> </div> </div> <br />