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geekpi
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[#]: collector: (lujun9972)
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[#]: translator: (geekpi)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: subject: (How To Fix Broken Ubuntu OS Without Reinstalling It)
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[#]: via: (https://www.ostechnix.com/how-to-fix-broken-ubuntu-os-without-reinstalling-it/)
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[#]: author: (SK https://www.ostechnix.com/author/sk/)
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[#]: url: ( )
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How To Fix Broken Ubuntu OS Without Reinstalling It
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======
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Today, I was upgrading my Ubuntu 18.04 LTS system. Unfortunately, the power has gone in mid-way and the system powered off while updating Ubuntu OS. When the power is back, I boot the system again. Right after entering the password at the login screen, it’s gone blank and didn’t respond. Keyboard and mouse also didn’t work. All I see is just a blank screen! Thankfully, It’s just a test machine and there were no important data in it. I can simply wipe off the entire OS and install it again. But, I don’t want to do that. Since I have nothing to lose, I just wanted to repair my broken Ubuntu system without reinstalling it completely and it worked!!! If you ever find yourself in a situation like mine, don’t panic. This brief tutorial describes how to easily fix broken Ubuntu OS without losing data and without reinstalling it completely.
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### Fix Broken Ubuntu OS
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First of all, try to login with live cd and **backup your data** in an external drive. Just in case, if this method didn’t work, you can still have your data and reinstall everything!
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At the login screen, press **CTRL+ALT+F1** to switch to **tty1**. You can learn more about switching between TTYs [**here**][1].
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Now, type the following commands one by one to fix the broken Ubuntu Linux.
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```
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$ sudo rm /var/lib/apt/lists/lock
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$ sudo rm /var/lib/dpkg/lock
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$ sudo rm /var/lib/dpkg/lock-frontend
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$ sudo dpkg --configure -a
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$ sudo apt clean
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$ sudo apt update --fix-missing
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$ sudo apt install -f
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$ sudo dpkg --configure -a
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$ sudo apt upgrade
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$ sudo apt dist-upgrade
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```
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Finally, reboot the system using command:
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```
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$ sudo reboot
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```
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You can now be able to login to your Ubuntu system as usual.
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After I followed these steps, all of my data in Ubuntu 18.04 test system was there and everything is the same as I left it. This method may not work for everyone. However, this small tip worked for me and saved a couple minutes from reinstalling. If you know any other better way, please let me know in the comment section. I will add them in this guide as well.
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And, that’s all for now. Hope this was useful.
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More good stuffs to come. Stay tuned!
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Cheers!
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--------------------------------------------------------------------------------
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via: https://www.ostechnix.com/how-to-fix-broken-ubuntu-os-without-reinstalling-it/
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作者：[SK][a]
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选题：[lujun9972][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://www.ostechnix.com/author/sk/
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[b]: https://github.com/lujun9972
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[1]: https://www.ostechnix.com/how-to-switch-between-ttys-without-using-function-keys-in-linux/
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@ -0,0 +1,78 @@
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[#]: collector: (lujun9972)
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[#]: translator: (geekpi)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: subject: (How To Fix Broken Ubuntu OS Without Reinstalling It)
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[#]: via: (https://www.ostechnix.com/how-to-fix-broken-ubuntu-os-without-reinstalling-it/)
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[#]: author: (SK https://www.ostechnix.com/author/sk/)
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[#]: url: ( )
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如何不重装修复损坏的 Ubuntu 系统
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======
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今天，我在升级我的 Ubuntu 18.04 LTS 系统。不幸的是，在更新 Ubuntu 时中途断电，系统关机。电源恢复后，我再次启动系统。在登录页面输入密码后，它变成空白并且没有响应。键盘和鼠标也没有作用。我只看到一个空白的屏幕！值得庆幸的是，它只是一台测试机，并且没有重要的数据。我可以直接擦除整个系统然后重新安装。但是，我不想这样做。由于我没有什么可失去的，我只是想不重装修复我损坏的 Ubuntu 系统，并且我成功了！如果你发现自己处于像我这样的境地，不要惊慌。这个简短的教程描述了如何在不丢失数据的情况下轻松修复损坏的 Ubuntu 系统，而无需重新安装。
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### 修复损坏的 Ubuntu 系统
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首先，尝试使用 live cd 登录并**在外部驱动器中备份数据**。以防这个方法没用，你仍然可以获取数据并重新安装系统！
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在登录页上，按下 **CTRL+ALT+F1** 切换到 **tty1**。你可以在[**此处**][1]了解有关在 TTY 之间切换的更多信息。
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现在，逐个输入以下命令来修复损坏的 Ubuntu Linux。
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```
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$ sudo rm /var/lib/apt/lists/lock
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$ sudo rm /var/lib/dpkg/lock
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$ sudo rm /var/lib/dpkg/lock-frontend
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$ sudo dpkg --configure -a
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$ sudo apt clean
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$ sudo apt update --fix-missing
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$ sudo apt install -f
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$ sudo dpkg --configure -a
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$ sudo apt upgrade
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$ sudo apt dist-upgrade
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```
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最后，使用命令重启系统：
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```
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$ sudo reboot
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```
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你现在可以像往常一样登录到你的 Ubuntu 系统。
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我做完这些步骤后，我 Ubuntu 18.04 测试系统中的所有数据都还在，一切都之前的一样。此方法可能不适用于所有人。但是，这个小小的贴士对我有用，并且比重装节省了一些时间。如果你了解其他更好的方法，请在评论区告诉我。我也会在本指南中添加它们。
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这是这些了。希望这篇文章有用。
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还有更多好东西。敬请关注！
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干杯!
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--------------------------------------------------------------------------------
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via: https://www.ostechnix.com/how-to-fix-broken-ubuntu-os-without-reinstalling-it/
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作者：[SK][a]
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选题：[lujun9972][b]
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译者：[geekpi](https://github.com/geekpi)
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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://www.ostechnix.com/author/sk/
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[b]: https://github.com/lujun9972
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[1]: https://www.ostechnix.com/how-to-switch-between-ttys-without-using-function-keys-in-linux/
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