最近偶然接触到Turnkey Linux这个发行版（https://www.turnkeylinux.org ），发现特别适合用于学习一些常见基于Linux的系统，如PostgreSQL数据库，Nodejs开发，各种CMS等等。直接在虚拟机中运行该发行版的镜像文件，可以说是开箱即用。

英文介绍：

Turnkey GNU/Linux is a free Debian based library of system images that pre-integrates and polishes the best free software components into secure, easy to use solutions.

TurnKey is inspired by a belief in the democratizing power of free software, like science, to promote the progress of a free & humane society. Without the freedom to freely distribute, tinker and learn from free software the Internet as we know it would not exist. Free software is the silent, often invisible power behind the greatest technological marvel of our era.

At the time of writing Debian, the largest GNU/Linux distribution has over 37,500 packages in its software repositories. The free software movement has collectively created a treasure trove of software that anyone is free to use, distribute, modify and learn from.

Unfortunately, much of this treasure is locked away because too few know about it and even fewer have the skills to take full advantage of it. Imagine how much good we could do if changed that. That's our vision and we invite you to join the mission.

Benefits

• 100+ ready-to-use solutions: discover and leverage the best free software. Deploy solutions quickly on bare metal, virtual machines, or in the cloud.

• Free as in speech: free software with full source code and a powerful build system. Free of hidden backdoors, free from restrictive licensing and free to learn from, modify and distribute.

• Secure and easy to maintain: auto-updated daily with latest security patches.

• 1-click backup and restore: smart backup software saves changes to files, databases and package management to encrypted storage which servers can be automatically restored from.

• It just works: designed for ease of use, built and tested collaboratively by the community.

• Based on Debian "stable": TurnKey version < - > Debian version matrix

• Support: We pride ourselves on the support we provide via the TurnKey Hub (Hub support is provided with the paid Hub plans). Free "getting started" support is available on all new Hub accounts during the free trial period. Please reach out if you wish to discuss paid support for on-premises/non Hub deployments. "Best effort" free support is always available via the TurnKey forums.

TurnKey GNU/Linux is licensed under the same terms as Debian. In other words, you are free to download, use, distribute and modify any solution or component for any purpose.

• Easy to use: includes a web management interface, web shell, and simple configuration console (screenshots).

• Lightweight (starting from 330MB): each solution is carefully built from the ground up with the minimum components needed to serve its role with maximum efficiency and security. Where relevant and Some additional tools are provided (e.g. wrapper/helper scripts, third party cli

• Assured integrity: solutions are built from verifiably unmodified Debian binaries, except for a few custom components for which full source code is available. Releases are cryptographically signed. See the FAQ.