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translating---geekpi
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A Kernel Module That Forcibly Shutdown Your System
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======
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I know that staying up late is bad for the health. But, who cares? I have been a night owl for years. I usually go to bed after 12 am, sometimes after 1 am. The next morning, I snooze my alarm at least three times, wake up tired and grumpy. Everyday, I promise myself I will go to bed earlier, but ended up going to bed very late as usual. And, this cycle continues! If you’re anything like me, here is a good news. A fellow late nighter has developed a Kernel module named **“Kgotobed”** that forces you to go to bed at a specific time. That said it will forcibly shutdown your system.
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Why should I use this? I have plenty of other options. I can set a cron job to schedule system shutdown at a specific time. I can set up a reminder or alarm clock. I can use a browser plugin or a software. You might ask! However, they all are can easily be ignored or bypassed. Kgotobed is something that you can’t ignore. Something that **can’t be disabled even if you’re a root user**. Yes, it will forcibly power off your system at the specified time. There is no snooze option. You can’t postpone the power off process or you can’t cancel it either. Your system will go down at the specified time no matter what. You have been warned!!
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### Install Kgotobed
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Make sure you have installed **dkms**. It is available in the default repositories of most Linux distributions.
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For example on Fedora, you can install it using the following command:
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```
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$ sudo dnf install kernel-devel-$(uname -r) dkms
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```
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On Debian, Ubuntu, linux Mint:
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```
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$ sudo apt install dkms
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```
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Once installed the prerequisites, git clone Kgotobed project.
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```
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$ git clone https://github.com/nikital/kgotobed.git
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```
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This command will clone all contents of Kgotobed repository in a folder named “kgotobed” in your current working directory. Cd to that directory:
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```
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$ cd kgotobed/
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```
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And, install Kgotobed driver using command:
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```
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$ sudo make install
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```
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The above command will register **kgotobed.ko** module with **DKMS** (so that it will be rebuilt for every kernel you run) and Install **gotobed** utility in **/usr/local/bin/** location and then register, enable and start kgotobed service.
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### How it works
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By default, Kgotobed sets bedtime to **1:00 AM**. That said, your computer will shutdown at 1:00 AM no matter what you’re doing.
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To view the current bed time, run:
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```
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$ gotobed
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Current bedtime is 2018-04-10 01:00:00
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```
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To move the bed time earlier, for example 22:00 (10 PM), run:
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```
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$ sudo gotobed 22:00
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[sudo] password for sk:
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Current bedtime is 2018-04-10 00:58:00
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Setting bedtime to 2018-04-09 22:00:00
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Bedtime will be in 2 hours 16 minutes
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```
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This can be helpful when you want to sleep earlier!
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However, you can’t move the bed time later i.e after 1:00 AM. You can’t unload the module, and adjusting system clock won’t help either. The only way out is a reboot!!
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To set different default time, you need to customize **kgotobed.service** (by editing it or by using systemd drop-in).
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### Uninstall Kgotobed
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Not happy with Kgotobed? No worries! Go to the “kgotobed” folder which we cloned earlier and run the following command to uninstall it.
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```
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$ sudo make uninstall
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```
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Again, I warn you there is no way to snooze, postpone, or cancel the power off process, even if you’re a root user. Your system will go down forcibly at the specified time. This is not for everyone! It may drive you nuts when you’re working on an important task. In such cases, make sure you have saved the work from time to time or use some advanced utilities that help you to auto shutdown, reboot, suspend, and hibernate your system at a specific time as described in the following link.
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And, that’s for now. Hope you find this guide useful. 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/kgotobed-a-kernel-module-that-forcibly-shutdown-your-system/
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作者：[SK][a]
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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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选题：[lujun9972](https://github.com/lujun9972)
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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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@ -0,0 +1,99 @@
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强制关闭系统的内核模块
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======
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我知道熬夜对健康不利。但谁在乎？多年来我一直是一只夜猫子。我通常在 12 点以后睡觉，有时在凌晨 1 点以后睡觉。第二天早上，我至少推迟三次闹钟，醒来后又累又有脾气。每天，我向自己保证早点睡觉，但最终会像平常一样晚睡。而且，这个循环还在继续！如果你和我一样，这有一个好消息。一个同学通宵开发了一个名为 **“Kgotobed”** 的内核模块，它迫使你在特定的时间上床睡觉。也就是说它会强制关闭你的系统。
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我为什么要用这个？我有很多其他的选择。我可以设置一个 cron 作业来安排在特定时间关闭系统。我可以设置提醒或闹钟。我可以使用浏览器插件或软件。你可能会问！但是，它们都可以轻易忽略或绕过。Kgotobed 是你不能忽视的东西。**即使您是 root 用户也无法禁用**。是的，它会在指定的时间强制关闭你的系统。没有推迟选项。你不能推迟关机过程，也不能取消它。无论如何，系统都会在指定的时间停止运行。你被警告了！！
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### 安装 Kgotobed
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确保你已经安装了 **dkms**。它在大多数 Linux 发行版的默认仓库中都有。
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例如在 Fedora 上，你可以使用以下命令安装它：
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```
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$ sudo dnf install kernel-devel-$(uname -r) dkms
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```
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在 Debian、Ubuntu、linux Mint 上：
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```
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$ sudo apt install dkms
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```
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安装完成后，git clone Kgotobed 项目。
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```
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$ git clone https://github.com/nikital/kgotobed.git
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```
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该命令会在当前工作目录中将所有 Kgotobed 仓库的内容克隆到名为 “kgotobed” 的文件夹中。cd 到该目录：
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```
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$ cd kgotobed/
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```
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接着，使用命令安装 Kgotobed 驱动：
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```
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$ sudo make install
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```
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上面的命令将 **kgotobed.ko** 模块注册到 **DKMS**（这样它会为每个你运行的内核重建）并在 **/usr/local/bin/** 目录下安装 **gotobed**，然后注册、启用并启动 kgotobed 服务。
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### 如何运行
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默认情况下，Kgotobed 将睡前时间设置为 **1:00 AM**。也就是说，无论你在做什么，你的电脑都会在凌晨 1 点关机。
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要查看当前的睡前时间，请运行：
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```
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$ gotobed
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Current bedtime is 2018-04-10 01:00:00
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```
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要提前睡眠时间，例如 22:00（晚上 10 点），请运行：
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```
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$ sudo gotobed 22:00
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[sudo] password for sk:
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Current bedtime is 2018-04-10 00:58:00
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Setting bedtime to 2018-04-09 22:00:00
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Bedtime will be in 2 hours 16 minutes
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```
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当你想早点睡觉时，这会很有帮助！
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但是，你不能设置更晚的时间也就是凌晨 1 点以后。你无法卸载模块，并且调整系统时钟也无济于事。唯一的出路是重启！
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要设置不同的默认时间，您需要自定义 **kgotobed.service**（通过编辑或使用 systemd 工具）。
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### 卸载 Kgotobed
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对 Kgotobed 不满意？别担心！进入我们先前克隆的 “kgotobed” 文件夹，然后运行以下命令将其卸载。
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```
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$ sudo make uninstall
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```
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再一次，我警告你，即使你是 root 用户，也没有办法推迟或取消关机过程。你的系统将在指定的时间强制关闭。这并不适合每个人！当你在做一项重要任务时，它可能会让你疯狂。在这种情况下，请确保你已经不时地保存工作，或使用下面链接中的一些高级工具来帮助你在特定时间自动关闭、重启、暂停和休眠系统。
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就是这些了。希望你觉得这个指南有帮助。还有更好的东西。敬请关注！
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干杯!
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--------------------------------------------------------------------------------
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via: https://www.ostechnix.com/kgotobed-a-kernel-module-that-forcibly-shutdown-your-system/
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作者：[SK][a]
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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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选题：[lujun9972](https://github.com/lujun9972)
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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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