在“服役的火奴鲁鲁”中，Gunicorn从哪里来？

Question

当我pip freeze时，我看不到Gunicorn。当我运行Gunicorn时，我想知道service gunicorn restart/stop是从哪里来的。service的S和Upstart的关系是什么？

谢谢。

编辑：

我现在了解到，在service gunicorn restart中，gunicorn只是我在/etc/init/中放置的脚本的名称(sans的.conf扩展)。service是一个命令，它在/etc/init.d中搜索System脚本，在/etc/init中搜索Upstart脚本。

有人能帮我看看这张桌子有什么问题吗？

|------------------+-------------+-----------+---------------------------------|
|                  |          service        |             on a Mac            |
|------------------+-------------+-----------+---------------------------------|
| actual manager   | ?           | init(8)   | launchd                         |
| interface        | ?           | initctl   | launchctl                       |
| name             | System-V    | Upstart   |                                 |
| Script locations | /etc/init.d | /etc/init | ~/Library/LaunchAgents and more |
|------------------+-------------+-----------+---------------------------------|

Answer 1

现在，system d是Ubuntu中的init系统，表看起来更像：

+------------------+---------------+-------------------+---------------------------+-----------------------------------+
|                  |                      service                                  |             on a Mac              |
+------------------+---------------+-------------------+---------------------------+-----------------------------------+
| actual manager   | none          | init(8)           | systemd(1)                | launchd                           |
| interface        | /etc/init.d/* | initctl           | systemctl                 | launchctl                         |
| name             | System-V      | Upstart           | systemd                   | launchd                           |
| Script locations | /etc/init.d   | /etc/init         | /etc/systemd              | ~/Library/LaunchAgents and more   |
|                  |               | ~/.config/upstart | /lib/systemd/system, etc. |                                   |
+------------------+---------------+-------------------+---------------------------+-----------------------------------+