supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit
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From: Paul Sopka <psopka@sopka.ch>
To: Brett Neumeier <random@freesa.org>,
	"supervision@list.skarnet.org" <supervision@list.skarnet.org>
Subject: Re: Have an external script wait for a oneshot service
Date: Wed, 4 Dec 2024 21:05:45 +0100	[thread overview]
Message-ID: <2571a89b-ac74-4d9e-b8c6-ff0fe05cebb7@sopka.ch> (raw)
In-Reply-To: <20241204140015.4e635037306d88117e053994@freesa.org>


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> You could use `s6-rc -a list`, perhaps? It lists all services that are in the active state.
>
> For example, I have a oneshot service called `swap` that turns on or off swap volumes.
>
> # s6-rc -a list | grep swap
> swap
> # s6-rc stop swap
> # s6-rc -a list | grep swap
> #
>
> I could run `grep -q swap` and then the exit status would tell me if it's running or not.
>
> Does that give you what you want?
Unfortunately not, since I specifically need to *wait*
and waiting based on "state-info" would require polling,
which I would rather avoid.

Regards

Paul


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  reply	other threads:[~2024-12-04 20:05 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-04 15:28 Paul Sopka
2024-12-04 15:38 ` Charles Cazabon via supervision
2024-12-04 17:12   ` Paul Sopka
2024-12-04 21:47     ` Hoël Bézier
2024-12-04 20:00 ` Brett Neumeier via supervision
2024-12-04 20:05   ` Paul Sopka [this message]
2024-12-04 20:18     ` Brett Neumeier via supervision
2024-12-04 20:59       ` Paul Sopka
2024-12-04 21:58         ` Re[2]: " Laurent Bercot
2024-12-05  5:59           ` Tanuj Bagaria
2024-12-05  6:54           ` Paul Sopka
2024-12-05  8:05             ` Re[2]: " Laurent Bercot
2024-12-05 13:52               ` Paul Sopka
2024-12-05 19:44                 ` Re[2]: " Laurent Bercot
2024-12-05 21:10                   ` Paul Sopka
2024-12-05 21:42                     ` Brett Neumeier via supervision
2024-12-06  5:32                       ` Paul Sopka
2024-12-05 23:03                     ` Re[2]: " Laurent Bercot
2024-12-06 12:41                       ` Paul Sopka
2024-12-06 15:43                         ` Re[2]: " Laurent Bercot
2024-12-06 16:11                           ` Hoël Bézier
2024-12-06 17:14                           ` Paul Sopka
2024-12-07 23:46                           ` Jan Braun
2024-12-05 21:24                   ` Jan Braun
2024-12-05 23:15                     ` Re[2]: " Laurent Bercot
2024-12-04 20:09   ` Tanuj Bagaria

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