X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:to:subject:references:date:in-reply-to
	:message-id:mime-version:content-type:content-transfer-encoding;
	q=dns; s=default; b=vs0+h2YCLolAA6XMILhgFOfheaDufUGc885AKnboCnZ
	proeuDh6cah4wFgvF6fB9UuPNqyd9Zn0zZ4gxaWFXscs+XSvT9a7JT7lrvE9zUPA
	lN4NYvGeRpBRv6+01k7V9H2SMY86/7T00sC/NqessBsi+zlT0HfZnUrji+c+gMD0
	=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:to:subject:references:date:in-reply-to
	:message-id:mime-version:content-type:content-transfer-encoding;
	s=default; bh=Z3o7DHxovN10JGMdur0KN3KqnrU=; b=N9zrp9iWcidy5x2T7
	hoz3Hfmtel3mDenilZR7ks44X0FDU5HQieaw/VC/cTup0TqHTOD+MmPFjbMYkhIu
	aUpgWuKKSq2WIXrkxYVWvbP3LPsIpAKVMX2314tugyyz294w0fsllnGcai5RQAZC
	7grSu9+eq7mRNcIUzNpzcvg2ow=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=-1.1 required=5.0 tests=AWL,BAYES_20,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=So, Repin, repin, postinstall
X-HELO:	mail-in-09.arcor-online.net
X-DKIM:	Sendmail DKIM Filter v2.8.2 mail-in-07.arcor-online.net 3qcXmw3p7wz1WZC
From:	Achim Gratz <Stromeko AT nexgo DOT de>
To:	cygwin AT cygwin DOT com
Subject:	Re: How to install a custom permanent postinstall handler?
References:	<838469265 DOT 20160401235308 AT yandex DOT ru>
Date:	Sat, 02 Apr 2016 11:21:15 +0200
In-Reply-To:	<838469265.20160401235308@yandex.ru> (Andrey Repin's message of "Fri, 1 Apr 2016 23:53:08 +0300")
Message-ID:	<87a8lcicxg.fsf@Rainer.invalid>
User-Agent:	Gnus/5.13 (Gnus v5.13) Emacs/25.0.91 (gnu/linux)
MIME-Version:	1.0
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id u329LmZx010069

Andrey Repin writes:
> Couple of my scripts rely on ASH/DASH functionality that is not present in
> BASH. (Namely "local -".)
> To amend that, I make a symlink /bin/sh = /bin/dash .
> But every time bash update, it overwrite the link.

I think the correct course of action would be to put /bin/sh under
control of the alternatives system.

> So… How would I go about creating a handler that would restore the parity?
> Will making a script /etc/postinstall be enough, or some additional magic is
> necessary?

There is.  You will want to run this script in postinstall stratum z as
a perpetual one, so the name of the script needs to start with "zp_"
(preferrably with a .dash suffix, too).


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

SD adaptation for Waldorf microQ V2.22R2:
http://Synth.Stromeko.net/Downloads.html#WaldorfSDada

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -