Date: Wed, 29 Sep 2021 08:34:31 +0900 From: Tatsuki Makino <tatsuki_makino@hotmail.com> To: Dan Mahoney <freebsd@gushi.org> Cc: Miroslav Lachman <000.fbsd@quip.cz>, "freebsd-ports@FreeBSD.org" <freebsd-ports@freebsd.org> Subject: Re: Quick fun question: only set an rc.d variable sometimes? Message-ID: <PSAPR03MB563905368DA70ABC56A1F7C8FAA89@PSAPR03MB5639.apcprd03.prod.outlook.com> In-Reply-To: <2BAA032C-E80A-431A-99E1-6126956DDC16@gushi.org> References: <5dabceea-7f3c-efbe-3778-67ca360547a@prime.gushi.org> <7d0ec8d5-1be3-dbd0-5f00-0cf51e3fa18f@quip.cz> <2BAA032C-E80A-431A-99E1-6126956DDC16@gushi.org>
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The rcscript is a /bin/sh script first, so all of Miroslav's replies are written in man sh.
However, the following differences
> : ${dummy_enable:=no}
> : ${dummy_msg="Nothing started."}
are only mentioned in manpage
> In the parameter expansions shown previously, use of the colon in the
> format results in a test for a parameter that is unset or null; omission
> of the colon results in a test for a parameter that is only unset.
So we would have to read it in depth to realize why. :)
Any missing variables can be made up in the script.
: ${pidfile=${dummy_pidfile-/var/run/dummy.pid}}
if [ -z "${pidfile}" ] ; then
pidfile='/var/run/dummy.pid'
fi
p.s.
I made a mistake in the address of the email, so I will send it again.
I'm sorry to those who received a duplicate. :)
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