NAME rrdtool fetch - fetch data from an rrd. The fetch function is normally used internally by the graph function, to get data from RRD s. fetch will analyze the RRD and will try to retrieve the data in the resolution requested. The data fetched is printed to stdout.
Negative numbers are relative to the current time.
By default one day worth of data will be fetched. Time in seconds since epoch. Apart from the traditional Seconds since epoch , rrdtool does also understand at-style time specification. When present, it should come first, when omitted, it defaults to now . Finally, you can use words now , start , or end as your time reference.