From 03fa1b027e4d92df4be3b5d1cca5bae38ba19707 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Thu, 13 Mar 2014 23:40:07 -0400
Subject: Fix grep commands in init scripts.

The exit status of a pipeline is the exit status of the last command in
the pipeline.  If the last command is ":", the exit status will always
be 0, regardless of whether grep finds the specified pattern.

So just use grep's -q command.  According to the documentation for GNU
grep, some older grep implementations lacked this option.  But we're
only running these scripts on BusyBox grep, which unconditionally
includes this option.
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