From mboxrd@z Thu Jan  1 00:00:00 1970
From: Harald Hoyer <harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH 2/3] wait_for_if_up fix
Date: Wed, 15 Feb 2012 09:22:50 +0100
Message-ID: <4F3B6B5A.6070007@redhat.com>
References: <20120215064027.GA30110@darkstar.nay.redhat.com>
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To: Dave Young <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: initramfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

Am 15.02.2012 07:40, schrieb Dave Young:
> wait_for_if_up will always return 0, fix it by change to use =~ to
> check if link state is up
> 
> Signed-off-by: Dave Young <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> ---
>  modules.d/99base/dracut-lib.sh |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
> index 6b70adf..85d4925 100755
> --- a/modules.d/99base/dracut-lib.sh
> +++ b/modules.d/99base/dracut-lib.sh
> @@ -385,7 +385,7 @@ wait_for_if_up() {
>      local cnt=0
>      while [ $cnt -lt 200 ]; do
>          li=$(ip link show $1)
> -        [ -z "${li##*state UP*}" ] && return 0
> +        [[ "$li" =~ "state UP" ]] && return 0
>          sleep 0.1
>          cnt=$(($cnt+1))
>      done


This is not posix shell compliant.

$ PS1="$ " dash
$ li="my state DOWN test"
$ [ -z "${li##*state UP*}" ] && echo OK
$ li="my state UP test"
$ [ -z "${li##*state UP*}" ] && echo OK
OK
$

works for me