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From: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
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Date: Tue, 12 Mar 2013 11:36:38 +0100
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	(Ross Burton's message of "Mon, 11 Mar 2013 13:07:36 -0700")
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Cc: Ross Burton <ross.burton-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH 6/9] systemd: allow postinsts to run without systemd being present
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Ross Burton <ross.burton-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
writes:

> These fragments may be used on a system that didn't actually boot with
> systemd, so check for systemctl first, and don't force systemd to be
> installed.

Checking for existence of programs in scriplets is a bad hack which
might hide real problems and the scriplets are getting more complicated
by this.

Placing scriplets and related files into separate subpackages is a much
cleaner solution.


> +if which systemctl >/dev/null; then

check with the shell builtin 'type $prog' is more portable and does not
require the external 'which' program.



Enrico