> In the 4BSD universe, you kill 1, and init sends SIGTERM to everything on
> the system. Programs that need to clean up after themselves are expected to
> catch SIGTERM and do whatever they need to do within about 15-30 seconds.
> 
> [...]
> 
> So, your "shutdown action" should be written in the code, to be run at
> SIGTERM.

And, since Iain mentioned INN ("innd") as the progenitor of this discussion,
I'd point out that "innd" already well knows what to do with a SIGTERM - it
does a perfectly orderly shutdown.

	- Greg
	  (Who wonders why this was brought up on port-sparc since there's
	   nothing specific to the Sun port about it)