rrdlast (1) Linux Manual Page

rrdlast – Return the date of the last data sample in an RRD

Synopsis

rrdtool last filename [–daemon address]

Description

The last function returns the UNIX timestamp of the most recent update of the RRD.

filename

The name of the RRD that contains the data.

–daemon address

Address of the rrdcached daemon. If specified, a "flush" command is sent to the server before reading the RRD files. This allows rrdtool to return fresh data even if the daemon is configured to cache values for a long time. For a list of accepted formats, see the -l option in the rrdcached manual.

 rrdtool last –daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd

Environment Variables

The following environment variables may be used to change the behavior of "rrdtool last":

RRDCACHED_ADDRESS

If this environment variable is set it will have the same effect as specifying the "–daemon" option on the command line. If both are present, the command line argument takes precedence.

Author

Russ Wright <rwwright [at] home.com>