restricted bm_Ubuntu上的Main，Restricted，Universe和Multiverse有什么区别？

restricted bm

Ubuntu provides four different software repositories, all of them official — Main, Restricted, Universe, and Multiverse. Main and Restricted are fully supported by Canonical, while Universe and Multiverse don’t receive the support you might expect.

Ubuntu提供了四个不同的软件存储库 ，它们都是官方的— Main，Restricted，Universe和Multiverse。 Canonical完全支持Main和Restricted，而Universe和Multiverse则未获得您所期望的支持。

On older versions of Ubuntu, only the Main and Restricted repositories were enabled by default. Ubuntu desktop systems now come with all four repositories enabled by default.

在旧版本的Ubuntu上，默认情况下仅启用主存储库和受限存储库。 Ubuntu桌面系统现在默认启用所有四个存储库。

主要-官方支持的开源软件 (Main – Officially Supported, Open-Source Software)

Main is described as “Canonical-supported free and open-source software.” Canonical is Ubuntu’s parent company, and they provide official support for all the software packages in Main. Every open-source software package included in Ubuntu’s default installation is included here. Other important packages — server software, for example — are also part of Main.

Main被描述为“规范支持的免费和开源软件” 。 Canonical是Ubuntu的母公司，它们为Main中的所有软件包提供官方支持。 Ubuntu的默认安装中包含的每个开源软件包都包含在此处。 其他重要的软件包(例如服务器软件)也是Main的一部分。

Canonical supports packages in the Main repository with security updates and other critical fixes for the lifetime of the Ubuntu release

Canonical在Ubuntu版本的整个生命周期中支持Main存储库中的软件包以及安全更新和其他重要修复程序

The Main repository is the main Ubuntu repository. If a package is in here, Canonical has committed to supporting it with security patches and other critical updates for the lifetime of the distribut

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