Re: [rrd-users] how to add last update info into graphic?

On Wed, Jun 20, 2007 at 10:18:41AM -0500, John Conner wrote:
> hey guys, I am trying to add last update time info into rrdtool graphic,
> what I did is something like
>
> #!/bin/bash
> now=`date`
>
> rrdtool graph blablabla \
> blablabla \
> blablabla \
> COMMENT:"last update\: $now"
>
> when I ran the scipt, I got the following error,
>
> ERROR: Garbage ':56:46 CDT 2007' after command:
> COMMENT:last update\: Wed Jun 20 09:56:46 CDT 2007
>
> I know it was caused by the ":", rrdtool does not like any ":" without "\",
>
> So any quick solution I can print date info on the graphic? thanks a lot!

Try sed, or awk, or any filter you happen to know. For instance:

now=`date|sed 's/:/\\:/g'`



You could also tell date how to present its output:

now=`date -u +%Y-%m-%dT%H\\:%M\\:%SZ`

HTH
--
Alex van den Bogaerdt
http://www.vandenbogaerdt.nl/rrdtool/

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