From: Gustavo Zacarias <gustavo@zacarias.com.ar>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH 1/1] package/dnsmasq: let init script cleanup stale pidfile
Date: Tue, 09 Dec 2014 18:48:28 -0300 [thread overview]
Message-ID: <54876E2C.6060208@zacarias.com.ar> (raw)
In-Reply-To: <1418160957.1422.38.camel@posteo.de>
On 12/09/2014 06:35 PM, J?rg Krause wrote:
> I want to check in a script if the dnsmasq daemon is running by testing
> for the existence of the pid file.
Generally speaking it's bad practice to just check the pidfile to know
if some daemon is running, because if it dies unexpectedly you'll still
have the pidfile around.
You should probably use a double check of pidfile and match the process,
something like (in shell):
grep dnsmasq /proc/`cat /var/run/dnsmasq.pid`/cmdline >/dev/null 2>&1 &&
echo "YES" || echo "NO"
Regards.
next prev parent reply other threads:[~2014-12-09 21:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-15 16:27 [Buildroot] [PATCH 1/1] package/dnsmasq: let init script cleanup stale pidfile Jörg Krause
2014-12-09 20:04 ` Gustavo Zacarias
2014-12-09 21:35 ` Jörg Krause
2014-12-09 21:48 ` Gustavo Zacarias [this message]
2014-12-09 21:58 ` Jörg Krause
2014-12-10 20:56 ` Gustavo Zacarias
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