This is a server-only mod used for automatic shutting down after specified time with no players online. From version 0.5.0 it is also capable of shutting down server at specified times (uses quite powerful cron-like syntax for definition of time).

 

MC1.6.4 | 0.6.0 | tested with Forge #884 | download (adfly)

MC1.5.2 | 0.5.0 | tested with Forge #655 | download (adfly)

MC1.5.1 | 0.4.0 | tested with Forge #655 | download (adfly)

MC1.4.6 | 0.3.0 | tested with Forge #471 | download (adfly)

MC1.4.5 | 0.2.0 | tested with Forge #395 | download (adfly)

 

Short article describing example server setup - Minecraft server with Forge „on demand“.

 

More information can be found at minecraftforum.

updated to 1.4.6

updated to 1.5.1

updated to 1.5.1

new version 0.5.0 is released - the mod now supports scheduled shutdown

updated to 1.6.4.

This mod seems like it could have a use on a small server, but what happens if one of your players wants to join after the server shuts down?  Automatic restart is probably a function that would receive wider use and appreciation.

This mod can be combined with some on-crash-restart script/app (e.g. MineStart). But yes, if you're looking for auto-restart then this mod isn't doing that exactly - it's supposed to be part of an "on demand" service. This mod handles auto-shuttingdown, but if you want players to be able to start server, you have to add another part - in OP is a link to the blog post which describes already working solution (the "starting" part there is a simple web page in php).