On Thu, Dec 2, 2010 at 11:34 AM, Simon Hobson <li...@thehobsons.co.uk>wrote:
> AFAIK you are supposed to be able to use PRINT statements and have > the results output as text rather than generating a graph. I've never > tried with with a CDEF though (as opposed to printing a single value > VDEF) so I don't know if that works. > Regarding this, there is a contradiction in the documentation. The man page for rrdgraph_graph shows the "new" form of PRINT as PRINT:vname:format[:strftime], and immediately after, it says "It is an error to specify a vname generated by a DEF or CDEF." But then it goes on to list the other (deprecated) form, and then says "The first form of this command is to be used with CDEF vnames." Regardless, I have not found any way to specify the "new" PRINT form that the command line parser likes. For example, if I use: $ rrdtool graph /tmp/graphout DEF:du=diskutil-sda.rrd:percent:AVERAGE CDEF:foo=du PRINT:foo:%lf --start end-30min Then I get: ERROR: Cannot parse CF in 'PRINT:foo:%lf' However, the new form of PRINT is not supposed to contain a CF. It seems like either the tool or the documentation is broken. Does anyone have any examples at all which use the "new form" of the PRINT command? -Neal
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