请问HN：适合儿童的良好操作系统是什么？
我最年长的孩子现在已经能够轻松阅读，这正是我想要向他们介绍计算机的时机。我心中设想的是，从一个离线的基本命令行界面开始，然后在这个环境中逐步学习文件管理和其他内容，趁它还很新鲜。在某个时刻，孩子对计算机足够熟悉后，我们就可以安装X或Wayland或其他任何东西。这主要是为了让他们在一个相对安全的环境中开始，直到他们展示出能够处理更多内容的能力。
我有几个问题：
（1）这是个好主意吗？我知道他们一进入小学就可能会接触到Windows，但我并不太担心他们会落后于同龄人。
（2）哪个操作系统比较合适？我最初考虑的是NetBSD，但后来我了解到它的非图形界面不支持Unicode，这可能是个致命问题，因为我们的母语使用非ASCII字符。
我仍然倾向于选择BSD，因为它比Linux发行版更完整、独立，但我也愿意听取其他意见。
[1]：并不是说我打算对操作系统进行本地化，但我怀疑我们会开始创建一些用我们自己语言写的小信息的文件。
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My oldest child is now reading without incommensurable effort, and this is the time I imagined I would introduce computers to my children.<p>I have in my mind the idea that I start them off from an offline barebones command-line interface, and then we gradually learn file management and maybe other things in that environment while it is still shiny. At some point the child is familiar enough with the computer that we install X or Wayland or whatever it may be. This is mainly in order to start them off in a fairly safe environment until they have shown they are able to handle more.<p>The questions I have are:<p>(1) Is this a good idea? I'm aware they'll probably run into Windows as soon as they enter elementary school, but I'm not too concerned they'd fall behind their peers.<p>(2) Which OS would be a good fit? I had my sights set on NetBSD at first, but then I learned its non-graphical interface does not support Unicode, which is probably a dealbreaker since our native language uses non-ASCII characters.[1]<p>I'm still leaning toward a BSD because it would be more of a complete, stand-alone operating system than a Linux distribution, but I'm willing to be convinced otherwise.<p>[1]: Not that I'm planning to localise the OS, but I suspect we'd start off creating files with little messages in our own language.