[rrd-users] suppressing output when creating graphs

[James Nunnerley]

Thing is - that will also suppress any errors... which obviously I'd want to
see.  The command I'm using is along the lines of:
/usr/bin/rrdtool graph /var/www/graphs/192.168.43.254.temp-day.png --lazy -s
-1day -t "Temperature" -g -h 125 -a PNG -v "Degs C"
DEF:temp1=/etc/rrdtool/192.168.43.254.temp.rrd:temp1:AVERAGE
LINE2:temp1#ffcc33:"Degs C" \
DEF:temp2=/etc/rrdtool/192.168.43.254.temp.rrd:temp2:AVERAGE
LINE2:temp2#ff0000:"Degs C" \
DEF:temp3=/etc/rrdtool/192.168.43.254.temp.rrd:temp3:AVERAGE
LINE2:temp3#0000ff:"Degs C" \
DEF:temp4=/etc/rrdtool/192.168.43.254.temp.rrd:temp4:AVERAGE
LINE2:temp4#00ff00:"Degs C" \
DEF:temp5=/etc/rrdtool/192.168.43.254.temp.rrd:temp5:AVERAGE
LINE2:temp5#990099:"Degs C"

The output is then something like:
497x241

Is there a way to stop that as part of the command, so you can then see any
errors?

Thanks
James

-----Original Message-----
From: Paul Halliday [mailto:paul.halliday at gmail.com] 
Sent: 07 July 2010 17:57
To: James Nunnerley
Cc: rrd-users at lists.oetiker.ch
Subject: Re: [rrd-users] suppressing output when creating graphs

On Wed, Jul 7, 2010 at 1:43 PM, James Nunnerley <james at webit.co.uk> wrote:
> I’ve got a series of shell scripts creating the graphs via a cron, but
every
> time the cron runs (15 mins) it creates an output with the image size of
the
> graph.  Is there a way to suppress the command? I’ve gone through the
> options but can’t find one?
>

*/15 * * * * command > /dev/null 2>&1