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Re: Debian Buster release to partially drop non-systemd support

On Thu, Oct 18, 2018 at 08:46:10AM +0200, Kamil Jońca wrote:
> > Put an OnFailure= line in systemd units that you want to mail you if
> > they go wrong
> >
> >> [Unit]
> >> OnFailure=status-email-user@%n.service
> But this not play well with exim4.
> See:
> https://lists.freedesktop.org/archives/systemd-devel/2018-September/041417.html
> (and thread as a whole)

Ouch.  This is downright terrifying.  It should be quite obvious why things
other than exim can break when called from there.

And there's no good way for a random tool you may use to know it might get
suddenly SIGKILLed out of the blue.

⣾⠁⢰⠒⠀⣿⡁ 10 people enter a bar: 1 who understands binary,
⢿⡄⠘⠷⠚⠋⠀ 1 who doesn't, D who prefer to write it as hex,
⠈⠳⣄⠀⠀⠀⠀ and 1 who narrowly avoided an off-by-one error.