netdev - RE: [iproute PATCH v2 2/2] ifcfg: Quote left-hand side of [ ] expression

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Message-ID: <063D6719AE5E284EB5DD2968C1650D6DD005A809@AcuExch.aculab.com>
Date:   Fri, 18 Aug 2017 09:32:52 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Phil Sutter' <phil@....cc>,
        Stephen Hemminger <stephen@...workplumber.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [iproute PATCH v2 2/2] ifcfg: Quote left-hand side of [ ]
 expression

From: Phil Sutter
> Sent: 17 August 2017 18:10
> This prevents word-splitting and therefore leads to more accurate error
> message in case 'grep -c' prints something other than a number.
> 
> Signed-off-by: Phil Sutter <phil@....cc>
> ---
>  ip/ifcfg | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/ip/ifcfg b/ip/ifcfg
> index 083d9df36742f..30a2dc49816cd 100644
> --- a/ip/ifcfg
> +++ b/ip/ifcfg
> @@ -131,7 +131,7 @@ noarp=$?
> 
>  ip route add unreachable 224.0.0.0/24 >& /dev/null
>  ip route add unreachable 255.255.255.255 >& /dev/null
> -if [ `ip link ls $dev | grep -c MULTICAST` -ge 1 ]; then
> +if [ "`ip link ls $dev | grep -c MULTICAST`" -ge 1 ]; then

You could drag all these scripts into the 1990's by using $(...)
instead of `...`.

	David