[rrd-developers] rrdgraph reports not printing when specifying standard output '-' as filename

[Matthew Chambers]

I run a command like:

 

rrdtool graph - --start -3600 --end N DEF:m0='load_five.rrd':'sum':AVERAGE
PRINT:m0:MAX:%.2lf

 

which should simply print the maximum load over the last hour.  This works
fine on 1.0.38 (the only other version I've tested on), but not in 1.2.23.
At someone's suggestion, I tried outputting to /dev/null instead of standard
out and the PRINT lines then show up on standard out.  But that's not
portable, so what's the solution here?

 

Thanks,

Matt Chambers

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