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[#]: subject: "How To Reset Sudo Password In Ubuntu 22.04 / 20.04 LTS"
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[#]: via: "https://ostechnix.com/how-to-reset-sudo-password-in-ubuntu-20-04-lts/"
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[#]: author: "sk https://ostechnix.com/author/sk/"
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[#]: collector: "lkxed"
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[#]: translator: "robsean"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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How To Reset Sudo Password In Ubuntu 22.04 / 20.04 LTS
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======
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Reset Forgotten Root Password In Ubuntu
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This brief guide explains how to reset sudo password in Ubuntu 22.04 and 20.04 LTS desktop and server editions from rescue mode.
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### Introduction
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When **[installing Ubuntu][1]**, a new user will be created with sudo privileges to perform all sorts of administrative tasks.
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If your Ubuntu system have multiple sudo users, you can easily reset the forgotten password of a sudo user or administrative user from another sudo user's account.
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What If you have only one sudo user and you lost the password? No problem! It is very easy to recover forgotten sudo user password in Ubuntu from the **"rescue"** or **"single user"** mode.
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This guide has been officially tested on Ubuntu 22.04 and 20.04 LTS editions, however the steps given below are same for other Ubuntu versions and derivatives.
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### Reset Sudo Password In Ubuntu 22.04 / 20.04 LTS
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First, boot your Ubuntu system into rescue mode to reset a sudo user's password as described in the link below.
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> [How To Boot Into Rescue Mode Or Emergency Mode In Ubuntu 22.04 / 20.04 / 18.04][2]
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After you entered into the rescue mode, mount the root (**/**) file system in read/write mode by running the following command:
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```
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# mount -n -o remount,rw /
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```
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Now, reset the sudo user's password using **"passwd"** command:
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```
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# passwd ostechnix
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```
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Here, **"ostechnix"** is the sudo user. Replace it with your own user name.
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Enter the password twice:
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```
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New password:
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Retype new password:
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passwd: password updated successfully
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```
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![Reset Sudo Password In Ubuntu 22.04 / 20.04 LTS][3]
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That's it. We have reset the sudo user password. If you have followed the **Method 1** to enter into rescue mode as described in the above link, press **“Ctrl+d”** to boot into normal mode. Alternatively, you can type any one of the following commands to boot into normal mode.
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```
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# systemctl default
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```
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Or,
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```
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# exit
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```
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If you want to reboot the system instead of booting into normal mode, enter:
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```
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# systemctl reboot
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```
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If you have followed the **Method 2** to enter into rescue mode as described in the above link, type:
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```
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# exit
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```
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You will go back to the recovery menu. Choose "**Resume normal boot**" and hit ENTER key.
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![Boot Into Normal Mode In Ubuntu][4]
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Again, choose OK and press ENTER to continue booting into normal mode:
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![Exit Recovery Mode And Boot Into Normal Mode][5]
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You can now use the new sudo password when running administrative commands.
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##### What If I Forgot Both Username And Password?
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If you forget the username, you can easily list the available users in your Linux system from the rescue mode using command:
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```
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# cat etc/passwd
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```
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Sample output from my Ubuntu 22.04 system:
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```
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[...]
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ostechnix:x:1000:1000:Ostechnix,,,:/home/ostechnix:/bin/bash
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[...]
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```
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Well, you now have the user name. Just follow the aforementioned steps to reset the user's password.
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--------------------------------------------------------------------------------
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via: https://ostechnix.com/how-to-reset-sudo-password-in-ubuntu-20-04-lts/
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作者：[sk][a]
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选题：[lkxed][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://ostechnix.com/author/sk/
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[b]: https://github.com/lkxed
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[1]: https://ostechnix.com/install-ubuntu-desktop/
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[2]: https://ostechnix.com/how-to-boot-into-rescue-mode-or-emergency-mode-in-ubuntu-18-04/
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[3]: https://ostechnix.com/wp-content/uploads/2022/05/Reset-Sudo-Password-In-Ubuntu.png
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[4]: https://ostechnix.com/wp-content/uploads/2020/05/Boot-into-normal-mode-in-Ubuntu.png
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[5]: https://ostechnix.com/wp-content/uploads/2020/05/Booting-into-normal-mode-from-rescue-mode-in-Ubuntu.png
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@ -0,0 +1,125 @@
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[#]: subject: "How To Reset Sudo Password In Ubuntu 22.04 / 20.04 LTS"
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[#]: via: "https://ostechnix.com/how-to-reset-sudo-password-in-ubuntu-20-04-lts/"
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[#]: author: "sk https://ostechnix.com/author/sk/"
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[#]: collector: "lkxed"
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[#]: translator: "robsean"
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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如何在 Ubuntu 22.04 / 20.04 LTS 中重新设置 sudo 密码
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======
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在 Ubuntu 中重新设置已忘记的 root 用户的密码
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这篇简单的指南将向你解释，如何在 Ubuntu 22.04 好 20.04 LTS 桌面环境中，以及从服务器版本中的 <ruby>恢复<rt>rescue</rt></ruby> 模式中重新设置 sudo 密码。
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### 介绍
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在 **[安装 Ubuntu][1]** 时，新创建的一个用户将会带有 sudo 权限，用以执行各种各样的管理任务。
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如果你的 Ubuntu 系统有多个 sudo 用户，你能够从另外一个 sudo 用户的账号下，轻松地重新设置所忘记的一个 sudo 用户或管理员用户的密码。
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如果你只有一个 sudo 用户，并且忘记了密码怎么办？没有问题! 从 Ubuntu 的 **<ruby>恢复<rt>rescue</rt></ruby>** 或 **<ruby>单一用户<rt>single user</rt></ruby>**** 模式中恢复 sudo 用户密码很容易。
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虽然这篇指南是在 Ubuntu 22.04 和 20.04 LTS 版本上进行的正式测试，不过，下面给定的步骤对于其它的 Ubuntu 版本和衍生版本来说是相同的。
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### 在 Ubuntu 22.04 / 20.04 LTS 中重新设置 sudo 密码
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首先，启动你的 Ubuntu 系统到 **<ruby>恢复<rt>rescue</rt></ruby>** 模式下，来重新设置一个 sudo 用户的密码，如下面的链接所述。
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> [如何启动到 Ubuntu 22.04 / 20.04 / 18.04 的 <ruby>恢复<rt>rescue</rt></ruby> 模式 或 <ruby>急救<rt>Emergency</rt></ruby> 模式 ][2]
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在吗进入到 **<ruby>恢复<rt>rescue</rt></ruby>** 模式下，通过运行下面的命令，以读/写的模式挂载 root (**/**) 文件系统：
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```
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# mount -n -o remount,rw /
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```
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现在，使用 **"passwd"** 命令来重新设置 sudo 用户的密码:
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```
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# passwd ostechnix
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```
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在这里，**"ostechnix"** 是 sudo 用户的名称。 使用你自己的用户名称来替换掉它。
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输入两次密码：
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```
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New password:
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Retype new password:
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passwd: password updated successfully
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```
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![Reset Sudo Password In Ubuntu 22.04 / 20.04 LTS][3]
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就这样。我们已经重新设置 sudo 用户密码。如果你按照上面链接所述的 **方法 1** 来进入到 **<ruby>恢复<rt>rescue</rt></ruby>** 模式，按下 **“Ctrl+d”** 组合键来启动到正常模式。或者，你也可以输入下面的任意一个命令来启动到正常模式。
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```
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# systemctl default
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```
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或，
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```
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# exit
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```
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如果你想重新启动系统，而不是启动到正常模式，输入：
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```
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# systemctl reboot
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```
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如果你已经按照上面链接所述的 **方法 2** 进入到<ruby>恢复<rt>rescue</rt></ruby> 模式，输入：
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```
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# exit
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```
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你将返回到 <ruby>恢复菜单<rt>recovery menu</rt></ruby> 。 现在 "**<ruby>恢复正常启动<rt>Resume normal boot</rt></ruby>**" ，并按下 <ruby>回车<rt>ENTER</rt></ruby> 键。
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![Boot Into Normal Mode In Ubuntu][4]
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在强调一次，选择 <ruby>确定<rt>OK</rt></ruby> 按钮，并按下 <ruby>回车<rt>ENTER</rt></ruby> 按键来继续启动到正常模式：
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![Exit Recovery Mode And Boot Into Normal Mode][5]
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现在，你在运行管理命令时可以使用新的 sudo 密码。
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##### 如果我把用户名称和密码都忘了怎么办？
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如果你忘记了用户名称，在 <ruby>恢复<rt>rescue</rt></ruby> 模式下，你可以很容易地列出你的 Linux 系统中的用户名称，使用目录：
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```
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# cat etc/passwd
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```
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来自我 Ubuntu 22.04 系统的输出示例：
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```
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[...]
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ostechnix:x:1000:1000:Ostechnix,,,:/home/ostechnix:/bin/bash
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[...]
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```
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好了，现在，你找到用户名称了。只需要按照上面的步骤来重新设置用户的密码即可。
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--------------------------------------------------------------------------------
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via: https://ostechnix.com/how-to-reset-sudo-password-in-ubuntu-20-04-lts/
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作者：[sk][a]
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选题：[lkxed][b]
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译者：[robsean](https://github.com/robsean)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://ostechnix.com/author/sk/
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[b]: https://github.com/lkxed
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[1]: https://ostechnix.com/install-ubuntu-desktop/
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[2]: https://ostechnix.com/how-to-boot-into-rescue-mode-or-emergency-mode-in-ubuntu-18-04/
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[3]: https://ostechnix.com/wp-content/uploads/2022/05/Reset-Sudo-Password-In-Ubuntu.png
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[4]: https://ostechnix.com/wp-content/uploads/2020/05/Boot-into-normal-mode-in-Ubuntu.png
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[5]: https://ostechnix.com/wp-content/uploads/2020/05/Booting-into-normal-mode-from-rescue-mode-in-Ubuntu.png
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